drivers/net/wireless/at76c50x-usb.c

   1 /*
   2  * at76c503/at76c505 USB driver
   3  *
   4  * Copyright (c) 2002 - 2003 Oliver Kurth
   5  * Copyright (c) 2004 Joerg Albert <joerg.albert@gmx.de>
   6  * Copyright (c) 2004 Nick Jones
   7  * Copyright (c) 2004 Balint Seeber <n0_5p4m_p13453@hotmail.com>
   8  * Copyright (c) 2007 Guido Guenther <agx@sigxcpu.org>
   9  * Copyright (c) 2007 Kalle Valo <kalle.valo@iki.fi>
  10  * Copyright (c) 2010 Sebastian Smolorz <sesmo@gmx.net>
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License as
  14  * published by the Free Software Foundation; either version 2 of
  15  * the License, or (at your option) any later version.
  16  *
  17  * This file is part of the Berlios driver for WLAN USB devices based on the
  18  * Atmel AT76C503A/505/505A.
  19  *
  20  * Some iw_handler code was taken from airo.c, (C) 1999 Benjamin Reed
  21  *
  22  * TODO list is at the wiki:
  23  *
  24  * http://wireless.kernel.org/en/users/Drivers/at76c50x-usb#TODO
  25  *
  26  */
  27
  28 #include <linux/init.h>
  29 #include <linux/kernel.h>
  30 #include <linux/sched.h>
  31 #include <linux/errno.h>
  32 #include <linux/slab.h>
  33 #include <linux/module.h>
  34 #include <linux/spinlock.h>
  35 #include <linux/list.h>
  36 #include <linux/usb.h>
  37 #include <linux/netdevice.h>
  38 #include <linux/if_arp.h>
  39 #include <linux/etherdevice.h>
  40 #include <linux/ethtool.h>
  41 #include <linux/wireless.h>
  42 #include <net/iw_handler.h>
  43 #include <net/ieee80211_radiotap.h>
  44 #include <linux/firmware.h>
  45 #include <linux/leds.h>
  46 #include <net/mac80211.h>
  47
  48 #include "at76c50x-usb.h"
  49
  50 /* Version information */
  51 #define DRIVER_NAME "at76c50x-usb"
  52 #define DRIVER_VERSION  "0.17"
  53 #define DRIVER_DESC "Atmel at76x USB Wireless LAN Driver"
  54
  55 /* at76_debug bits */
  56 #define DBG_PROGRESS            0x00000001      /* authentication/accociation */
  57 #define DBG_BSS_TABLE           0x00000002      /* show BSS table after scans */
  58 #define DBG_IOCTL               0x00000004      /* ioctl calls / settings */
  59 #define DBG_MAC_STATE           0x00000008      /* MAC state transitions */
  60 #define DBG_TX_DATA             0x00000010      /* tx header */
  61 #define DBG_TX_DATA_CONTENT     0x00000020      /* tx content */
  62 #define DBG_TX_MGMT             0x00000040      /* tx management */
  63 #define DBG_RX_DATA             0x00000080      /* rx data header */
  64 #define DBG_RX_DATA_CONTENT     0x00000100      /* rx data content */
  65 #define DBG_RX_MGMT             0x00000200      /* rx mgmt frame headers */
  66 #define DBG_RX_BEACON           0x00000400      /* rx beacon */
  67 #define DBG_RX_CTRL             0x00000800      /* rx control */
  68 #define DBG_RX_MGMT_CONTENT     0x00001000      /* rx mgmt content */
  69 #define DBG_RX_FRAGS            0x00002000      /* rx data fragment handling */
  70 #define DBG_DEVSTART            0x00004000      /* fw download, device start */
  71 #define DBG_URB                 0x00008000      /* rx urb status, ... */
  72 #define DBG_RX_ATMEL_HDR        0x00010000      /* Atmel-specific Rx headers */
  73 #define DBG_PROC_ENTRY          0x00020000      /* procedure entries/exits */
  74 #define DBG_PM                  0x00040000      /* power management settings */
  75 #define DBG_BSS_MATCH           0x00080000      /* BSS match failures */
  76 #define DBG_PARAMS              0x00100000      /* show configured parameters */
  77 #define DBG_WAIT_COMPLETE       0x00200000      /* command completion */
  78 #define DBG_RX_FRAGS_SKB        0x00400000      /* skb header of Rx fragments */
  79 #define DBG_BSS_TABLE_RM        0x00800000      /* purging bss table entries */
  80 #define DBG_MONITOR_MODE        0x01000000      /* monitor mode */
  81 #define DBG_MIB                 0x02000000      /* dump all MIBs on startup */
  82 #define DBG_MGMT_TIMER          0x04000000      /* dump mgmt_timer ops */
  83 #define DBG_WE_EVENTS           0x08000000      /* dump wireless events */
  84 #define DBG_FW                  0x10000000      /* firmware download */
  85 #define DBG_DFU                 0x20000000      /* device firmware upgrade */
  86 #define DBG_CMD                 0x40000000
  87 #define DBG_MAC80211            0x80000000
  88
  89 #define DBG_DEFAULTS            0
  90
  91 /* Use our own dbg macro */
  92 #define at76_dbg(bits, format, arg...) \
  93         do { \
  94                 if (at76_debug & (bits))                                 \
  95                         printk(KERN_DEBUG DRIVER_NAME ": " format "\n" , \
  96                                ## arg);                                  \
  97         } while (0)
  98
  99 #define at76_dbg_dump(bits, buf, len, format, arg...)   \
 100         do { \
 101                 if (at76_debug & (bits)) { \
 102                         printk(KERN_DEBUG DRIVER_NAME ": " format "\n" , \
 103                                ## arg);                                  \
 104                         print_hex_dump_bytes("", DUMP_PREFIX_OFFSET,     \
 105                                              buf, len);                  \
 106                 }                                                        \
 107         } while (0)
 108
 109 static uint at76_debug = DBG_DEFAULTS;
 110
 111 /* Protect against concurrent firmware loading and parsing */
 112 static struct mutex fw_mutex;
 113
 114 static struct fwentry firmwares[] = {
 115         [0] = { "" },
 116         [BOARD_503_ISL3861] = { "atmel_at76c503-i3861.bin" },
 117         [BOARD_503_ISL3863] = { "atmel_at76c503-i3863.bin" },
 118         [BOARD_503] = { "atmel_at76c503-rfmd.bin" },
 119         [BOARD_503_ACC] = { "atmel_at76c503-rfmd-acc.bin" },
 120         [BOARD_505] = { "atmel_at76c505-rfmd.bin" },
 121         [BOARD_505_2958] = { "atmel_at76c505-rfmd2958.bin" },
 122         [BOARD_505A] = { "atmel_at76c505a-rfmd2958.bin" },
 123         [BOARD_505AMX] = { "atmel_at76c505amx-rfmd.bin" },
 124 };
 125 MODULE_FIRMWARE("atmel_at76c503-i3861.bin");
 126 MODULE_FIRMWARE("atmel_at76c503-i3863.bin");
 127 MODULE_FIRMWARE("atmel_at76c503-rfmd.bin");
 128 MODULE_FIRMWARE("atmel_at76c503-rfmd-acc.bin");
 129 MODULE_FIRMWARE("atmel_at76c505-rfmd.bin");
 130 MODULE_FIRMWARE("atmel_at76c505-rfmd2958.bin");
 131 MODULE_FIRMWARE("atmel_at76c505a-rfmd2958.bin");
 132 MODULE_FIRMWARE("atmel_at76c505amx-rfmd.bin");
 133
 134 #define USB_DEVICE_DATA(__ops)  .driver_info = (kernel_ulong_t)(__ops)
 135
 136 static struct usb_device_id dev_table[] = {
 137         /*
 138          * at76c503-i3861
 139          */
 140         /* Generic AT76C503/3861 device */
 141         { USB_DEVICE(0x03eb, 0x7603), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 142         /* Linksys WUSB11 v2.1/v2.6 */
 143         { USB_DEVICE(0x066b, 0x2211), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 144         /* Netgear MA101 rev. A */
 145         { USB_DEVICE(0x0864, 0x4100), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 146         /* Tekram U300C / Allnet ALL0193 */
 147         { USB_DEVICE(0x0b3b, 0x1612), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 148         /* HP HN210W J7801A */
 149         { USB_DEVICE(0x03f0, 0x011c), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 150         /* Sitecom/Z-Com/Zyxel M4Y-750 */
 151         { USB_DEVICE(0x0cde, 0x0001), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 152         /* Dynalink/Askey WLL013 (intersil) */
 153         { USB_DEVICE(0x069a, 0x0320), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 154         /* EZ connect 11Mpbs Wireless USB Adapter SMC2662W v1 */
 155         { USB_DEVICE(0x0d5c, 0xa001), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 156         /* BenQ AWL300 */
 157         { USB_DEVICE(0x04a5, 0x9000), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 158         /* Addtron AWU-120, Compex WLU11 */
 159         { USB_DEVICE(0x05dd, 0xff31), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 160         /* Intel AP310 AnyPoint II USB */
 161         { USB_DEVICE(0x8086, 0x0200), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 162         /* Dynalink L11U */
 163         { USB_DEVICE(0x0d8e, 0x7100), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 164         /* Arescom WL-210, FCC id 07J-GL2411USB */
 165         { USB_DEVICE(0x0d8e, 0x7110), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 166         /* I-O DATA WN-B11/USB */
 167         { USB_DEVICE(0x04bb, 0x0919), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 168         /* BT Voyager 1010 */
 169         { USB_DEVICE(0x069a, 0x0821), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 170         /*
 171          * at76c503-i3863
 172          */
 173         /* Generic AT76C503/3863 device */
 174         { USB_DEVICE(0x03eb, 0x7604), USB_DEVICE_DATA(BOARD_503_ISL3863) },
 175         /* Samsung SWL-2100U */
 176         { USB_DEVICE(0x055d, 0xa000), USB_DEVICE_DATA(BOARD_503_ISL3863) },
 177         /*
 178          * at76c503-rfmd
 179          */
 180         /* Generic AT76C503/RFMD device */
 181         { USB_DEVICE(0x03eb, 0x7605), USB_DEVICE_DATA(BOARD_503) },
 182         /* Dynalink/Askey WLL013 (rfmd) */
 183         { USB_DEVICE(0x069a, 0x0321), USB_DEVICE_DATA(BOARD_503) },
 184         /* Linksys WUSB11 v2.6 */
 185         { USB_DEVICE(0x077b, 0x2219), USB_DEVICE_DATA(BOARD_503) },
 186         /* Network Everywhere NWU11B */
 187         { USB_DEVICE(0x077b, 0x2227), USB_DEVICE_DATA(BOARD_503) },
 188         /* Netgear MA101 rev. B */
 189         { USB_DEVICE(0x0864, 0x4102), USB_DEVICE_DATA(BOARD_503) },
 190         /* D-Link DWL-120 rev. E */
 191         { USB_DEVICE(0x2001, 0x3200), USB_DEVICE_DATA(BOARD_503) },
 192         /* Actiontec 802UAT1, HWU01150-01UK */
 193         { USB_DEVICE(0x1668, 0x7605), USB_DEVICE_DATA(BOARD_503) },
 194         /* AirVast W-Buddie WN210 */
 195         { USB_DEVICE(0x03eb, 0x4102), USB_DEVICE_DATA(BOARD_503) },
 196         /* Dick Smith Electronics XH1153 802.11b USB adapter */
 197         { USB_DEVICE(0x1371, 0x5743), USB_DEVICE_DATA(BOARD_503) },
 198         /* CNet CNUSB611 */
 199         { USB_DEVICE(0x1371, 0x0001), USB_DEVICE_DATA(BOARD_503) },
 200         /* FiberLine FL-WL200U */
 201         { USB_DEVICE(0x1371, 0x0002), USB_DEVICE_DATA(BOARD_503) },
 202         /* BenQ AWL400 USB stick */
 203         { USB_DEVICE(0x04a5, 0x9001), USB_DEVICE_DATA(BOARD_503) },
 204         /* 3Com 3CRSHEW696 */
 205         { USB_DEVICE(0x0506, 0x0a01), USB_DEVICE_DATA(BOARD_503) },
 206         /* Siemens Santis ADSL WLAN USB adapter WLL 013 */
 207         { USB_DEVICE(0x0681, 0x001b), USB_DEVICE_DATA(BOARD_503) },
 208         /* Belkin F5D6050, version 2 */
 209         { USB_DEVICE(0x050d, 0x0050), USB_DEVICE_DATA(BOARD_503) },
 210         /* iBlitzz, BWU613 (not *B or *SB) */
 211         { USB_DEVICE(0x07b8, 0xb000), USB_DEVICE_DATA(BOARD_503) },
 212         /* Gigabyte GN-WLBM101 */
 213         { USB_DEVICE(0x1044, 0x8003), USB_DEVICE_DATA(BOARD_503) },
 214         /* Planex GW-US11S */
 215         { USB_DEVICE(0x2019, 0x3220), USB_DEVICE_DATA(BOARD_503) },
 216         /* Internal WLAN adapter in h5[4,5]xx series iPAQs */
 217         { USB_DEVICE(0x049f, 0x0032), USB_DEVICE_DATA(BOARD_503) },
 218         /* Corega Wireless LAN USB-11 mini */
 219         { USB_DEVICE(0x07aa, 0x0011), USB_DEVICE_DATA(BOARD_503) },
 220         /* Corega Wireless LAN USB-11 mini2 */
 221         { USB_DEVICE(0x07aa, 0x0018), USB_DEVICE_DATA(BOARD_503) },
 222         /* Uniden PCW100 */
 223         { USB_DEVICE(0x05dd, 0xff35), USB_DEVICE_DATA(BOARD_503) },
 224         /*
 225          * at76c503-rfmd-acc
 226          */
 227         /* SMC2664W */
 228         { USB_DEVICE(0x083a, 0x3501), USB_DEVICE_DATA(BOARD_503_ACC) },
 229         /* Belkin F5D6050, SMC2662W v2, SMC2662W-AR */
 230         { USB_DEVICE(0x0d5c, 0xa002), USB_DEVICE_DATA(BOARD_503_ACC) },
 231         /*
 232          * at76c505-rfmd
 233          */
 234         /* Generic AT76C505/RFMD */
 235         { USB_DEVICE(0x03eb, 0x7606), USB_DEVICE_DATA(BOARD_505) },
 236         /*
 237          * at76c505-rfmd2958
 238          */
 239         /* Generic AT76C505/RFMD, OvisLink WL-1130USB */
 240         { USB_DEVICE(0x03eb, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) },
 241         /* Fiberline FL-WL240U */
 242         { USB_DEVICE(0x1371, 0x0014), USB_DEVICE_DATA(BOARD_505_2958) },
 243         /* CNet CNUSB-611G */
 244         { USB_DEVICE(0x1371, 0x0013), USB_DEVICE_DATA(BOARD_505_2958) },
 245         /* Linksys WUSB11 v2.8 */
 246         { USB_DEVICE(0x1915, 0x2233), USB_DEVICE_DATA(BOARD_505_2958) },
 247         /* Xterasys XN-2122B, IBlitzz BWU613B/BWU613SB */
 248         { USB_DEVICE(0x12fd, 0x1001), USB_DEVICE_DATA(BOARD_505_2958) },
 249         /* Corega WLAN USB Stick 11 */
 250         { USB_DEVICE(0x07aa, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) },
 251         /* Microstar MSI Box MS6978 */
 252         { USB_DEVICE(0x0db0, 0x1020), USB_DEVICE_DATA(BOARD_505_2958) },
 253         /*
 254          * at76c505a-rfmd2958
 255          */
 256         /* Generic AT76C505A device */
 257         { USB_DEVICE(0x03eb, 0x7614), USB_DEVICE_DATA(BOARD_505A) },
 258         /* Generic AT76C505AS device */
 259         { USB_DEVICE(0x03eb, 0x7617), USB_DEVICE_DATA(BOARD_505A) },
 260         /* Siemens Gigaset USB WLAN Adapter 11 */
 261         { USB_DEVICE(0x1690, 0x0701), USB_DEVICE_DATA(BOARD_505A) },
 262         /* OQO Model 01+ Internal Wi-Fi */
 263         { USB_DEVICE(0x1557, 0x0002), USB_DEVICE_DATA(BOARD_505A) },
 264         /*
 265          * at76c505amx-rfmd
 266          */
 267         /* Generic AT76C505AMX device */
 268         { USB_DEVICE(0x03eb, 0x7615), USB_DEVICE_DATA(BOARD_505AMX) },
 269         { }
 270 };
 271
 272 MODULE_DEVICE_TABLE(usb, dev_table);
 273
 274 /* Supported rates of this hardware, bit 7 marks basic rates */
 275 static const u8 hw_rates[] = { 0x82, 0x84, 0x0b, 0x16 };
 276
 277 static const char *const preambles[] = { "long", "short", "auto" };
 278
 279 /* Firmware download */
 280 /* DFU states */
 281 #define STATE_IDLE                      0x00
 282 #define STATE_DETACH                    0x01
 283 #define STATE_DFU_IDLE                  0x02
 284 #define STATE_DFU_DOWNLOAD_SYNC         0x03
 285 #define STATE_DFU_DOWNLOAD_BUSY         0x04
 286 #define STATE_DFU_DOWNLOAD_IDLE         0x05
 287 #define STATE_DFU_MANIFEST_SYNC         0x06
 288 #define STATE_DFU_MANIFEST              0x07
 289 #define STATE_DFU_MANIFEST_WAIT_RESET   0x08
 290 #define STATE_DFU_UPLOAD_IDLE           0x09
 291 #define STATE_DFU_ERROR                 0x0a
 292
 293 /* DFU commands */
 294 #define DFU_DETACH                      0
 295 #define DFU_DNLOAD                      1
 296 #define DFU_UPLOAD                      2
 297 #define DFU_GETSTATUS                   3
 298 #define DFU_CLRSTATUS                   4
 299 #define DFU_GETSTATE                    5
 300 #define DFU_ABORT                       6
 301
 302 #define FW_BLOCK_SIZE 1024
 303
 304 struct dfu_status {
 305         unsigned char status;
 306         unsigned char poll_timeout[3];
 307         unsigned char state;
 308         unsigned char string;
 309 } __packed;
 310
 311 static inline int at76_is_intersil(enum board_type board)
 312 {
 313         return (board == BOARD_503_ISL3861 || board == BOARD_503_ISL3863);
 314 }
 315
 316 static inline int at76_is_503rfmd(enum board_type board)
 317 {
 318         return (board == BOARD_503 || board == BOARD_503_ACC);
 319 }
 320
 321 static inline int at76_is_505a(enum board_type board)
 322 {
 323         return (board == BOARD_505A || board == BOARD_505AMX);
 324 }
 325
 326 /* Load a block of the first (internal) part of the firmware */
 327 static int at76_load_int_fw_block(struct usb_device *udev, int blockno,
 328                                   void *block, int size)
 329 {
 330         return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), DFU_DNLOAD,
 331                                USB_TYPE_CLASS | USB_DIR_OUT |
 332                                USB_RECIP_INTERFACE, blockno, 0, block, size,
 333                                USB_CTRL_GET_TIMEOUT);
 334 }
 335
 336 static int at76_dfu_get_status(struct usb_device *udev,
 337                                struct dfu_status *status)
 338 {
 339         int ret;
 340
 341         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATUS,
 342                               USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
 343                               0, 0, status, sizeof(struct dfu_status),
 344                               USB_CTRL_GET_TIMEOUT);
 345         return ret;
 346 }
 347
 348 static u8 at76_dfu_get_state(struct usb_device *udev, u8 *state)
 349 {
 350         int ret;
 351
 352         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATE,
 353                               USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
 354                               0, 0, state, 1, USB_CTRL_GET_TIMEOUT);
 355         return ret;
 356 }
 357
 358 /* Convert timeout from the DFU status to jiffies */
 359 static inline unsigned long at76_get_timeout(struct dfu_status *s)
 360 {
 361         return msecs_to_jiffies((s->poll_timeout[2] << 16)
 362                                 | (s->poll_timeout[1] << 8)
 363                                 | (s->poll_timeout[0]));
 364 }
 365
 366 /* Load internal firmware from the buffer.  If manifest_sync_timeout > 0, use
 367  * its value in jiffies in the MANIFEST_SYNC state.  */
 368 static int at76_usbdfu_download(struct usb_device *udev, u8 *buf, u32 size,
 369                                 int manifest_sync_timeout)
 370 {
 371         u8 *block;
 372         struct dfu_status dfu_stat_buf;
 373         int ret = 0;
 374         int need_dfu_state = 1;
 375         int is_done = 0;
 376         u8 dfu_state = 0;
 377         u32 dfu_timeout = 0;
 378         int bsize = 0;
 379         int blockno = 0;
 380
 381         at76_dbg(DBG_DFU, "%s( %p, %u, %d)", __func__, buf, size,
 382                  manifest_sync_timeout);
 383
 384         if (!size) {
 385                 dev_printk(KERN_ERR, &udev->dev, "FW buffer length invalid!\n");
 386                 return -EINVAL;
 387         }
 388
 389         block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
 390         if (!block)
 391                 return -ENOMEM;
 392
 393         do {
 394                 if (need_dfu_state) {
 395                         ret = at76_dfu_get_state(udev, &dfu_state);
 396                         if (ret < 0) {
 397                                 dev_printk(KERN_ERR, &udev->dev,
 398                                            "cannot get DFU state: %d\n", ret);
 399                                 goto exit;
 400                         }
 401                         need_dfu_state = 0;
 402                 }
 403
 404                 switch (dfu_state) {
 405                 case STATE_DFU_DOWNLOAD_SYNC:
 406                         at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_SYNC");
 407                         ret = at76_dfu_get_status(udev, &dfu_stat_buf);
 408                         if (ret >= 0) {
 409                                 dfu_state = dfu_stat_buf.state;
 410                                 dfu_timeout = at76_get_timeout(&dfu_stat_buf);
 411                                 need_dfu_state = 0;
 412                         } else
 413                                 dev_printk(KERN_ERR, &udev->dev,
 414                                            "at76_dfu_get_status returned %d\n",
 415                                            ret);
 416                         break;
 417
 418                 case STATE_DFU_DOWNLOAD_BUSY:
 419                         at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_BUSY");
 420                         need_dfu_state = 1;
 421
 422                         at76_dbg(DBG_DFU, "DFU: Resetting device");
 423                         schedule_timeout_interruptible(dfu_timeout);
 424                         break;
 425
 426                 case STATE_DFU_DOWNLOAD_IDLE:
 427                         at76_dbg(DBG_DFU, "DOWNLOAD...");
 428                         /* fall through */
 429                 case STATE_DFU_IDLE:
 430                         at76_dbg(DBG_DFU, "DFU IDLE");
 431
 432                         bsize = min_t(int, size, FW_BLOCK_SIZE);
 433                         memcpy(block, buf, bsize);
 434                         at76_dbg(DBG_DFU, "int fw, size left = %5d, "
 435                                  "bsize = %4d, blockno = %2d", size, bsize,
 436                                  blockno);
 437                         ret =
 438                             at76_load_int_fw_block(udev, blockno, block, bsize);
 439                         buf += bsize;
 440                         size -= bsize;
 441                         blockno++;
 442
 443                         if (ret != bsize)
 444                                 dev_printk(KERN_ERR, &udev->dev,
 445                                            "at76_load_int_fw_block "
 446                                            "returned %d\n", ret);
 447                         need_dfu_state = 1;
 448                         break;
 449
 450                 case STATE_DFU_MANIFEST_SYNC:
 451                         at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_SYNC");
 452
 453                         ret = at76_dfu_get_status(udev, &dfu_stat_buf);
 454                         if (ret < 0)
 455                                 break;
 456
 457                         dfu_state = dfu_stat_buf.state;
 458                         dfu_timeout = at76_get_timeout(&dfu_stat_buf);
 459                         need_dfu_state = 0;
 460
 461                         /* override the timeout from the status response,
 462                            needed for AT76C505A */
 463                         if (manifest_sync_timeout > 0)
 464                                 dfu_timeout = manifest_sync_timeout;
 465
 466                         at76_dbg(DBG_DFU, "DFU: Waiting for manifest phase");
 467                         schedule_timeout_interruptible(dfu_timeout);
 468                         break;
 469
 470                 case STATE_DFU_MANIFEST:
 471                         at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST");
 472                         is_done = 1;
 473                         break;
 474
 475                 case STATE_DFU_MANIFEST_WAIT_RESET:
 476                         at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_WAIT_RESET");
 477                         is_done = 1;
 478                         break;
 479
 480                 case STATE_DFU_UPLOAD_IDLE:
 481                         at76_dbg(DBG_DFU, "STATE_DFU_UPLOAD_IDLE");
 482                         break;
 483
 484                 case STATE_DFU_ERROR:
 485                         at76_dbg(DBG_DFU, "STATE_DFU_ERROR");
 486                         ret = -EPIPE;
 487                         break;
 488
 489                 default:
 490                         at76_dbg(DBG_DFU, "DFU UNKNOWN STATE (%d)", dfu_state);
 491                         ret = -EINVAL;
 492                         break;
 493                 }
 494         } while (!is_done && (ret >= 0));
 495
 496 exit:
 497         kfree(block);
 498         if (ret >= 0)
 499                 ret = 0;
 500
 501         return ret;
 502 }
 503
 504 #define HEX2STR_BUFFERS 4
 505 #define HEX2STR_MAX_LEN 64
 506 #define BIN2HEX(x) ((x) < 10 ? '0' + (x) : (x) + 'A' - 10)
 507
 508 /* Convert binary data into hex string */
 509 static char *hex2str(void *buf, int len)
 510 {
 511         static atomic_t a = ATOMIC_INIT(0);
 512         static char bufs[HEX2STR_BUFFERS][3 * HEX2STR_MAX_LEN + 1];
 513         char *ret = bufs[atomic_inc_return(&a) & (HEX2STR_BUFFERS - 1)];
 514         char *obuf = ret;
 515         u8 *ibuf = buf;
 516
 517         if (len > HEX2STR_MAX_LEN)
 518                 len = HEX2STR_MAX_LEN;
 519
 520         if (len <= 0) {
 521                 ret[0] = '\0';
 522                 return ret;
 523         }
 524
 525         while (len--) {
 526                 *obuf++ = BIN2HEX(*ibuf >> 4);
 527                 *obuf++ = BIN2HEX(*ibuf & 0xf);
 528                 *obuf++ = '-';
 529                 ibuf++;
 530         }
 531         *(--obuf) = '\0';
 532
 533         return ret;
 534 }
 535
 536 /* LED trigger */
 537 static int tx_activity;
 538 static void at76_ledtrig_tx_timerfunc(unsigned long data);
 539 static DEFINE_TIMER(ledtrig_tx_timer, at76_ledtrig_tx_timerfunc, 0, 0);
 540 DEFINE_LED_TRIGGER(ledtrig_tx);
 541
 542 static void at76_ledtrig_tx_timerfunc(unsigned long data)
 543 {
 544         static int tx_lastactivity;
 545
 546         if (tx_lastactivity != tx_activity) {
 547                 tx_lastactivity = tx_activity;
 548                 led_trigger_event(ledtrig_tx, LED_FULL);
 549                 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
 550         } else
 551                 led_trigger_event(ledtrig_tx, LED_OFF);
 552 }
 553
 554 static void at76_ledtrig_tx_activity(void)
 555 {
 556         tx_activity++;
 557         if (!timer_pending(&ledtrig_tx_timer))
 558                 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
 559 }
 560
 561 static int at76_remap(struct usb_device *udev)
 562 {
 563         int ret;
 564         ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0a,
 565                               USB_TYPE_VENDOR | USB_DIR_OUT |
 566                               USB_RECIP_INTERFACE, 0, 0, NULL, 0,
 567                               USB_CTRL_GET_TIMEOUT);
 568         if (ret < 0)
 569                 return ret;
 570         return 0;
 571 }
 572
 573 static int at76_get_op_mode(struct usb_device *udev)
 574 {
 575         int ret;
 576         u8 saved;
 577         u8 *op_mode;
 578
 579         op_mode = kmalloc(1, GFP_NOIO);
 580         if (!op_mode)
 581                 return -ENOMEM;
 582         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
 583                               USB_TYPE_VENDOR | USB_DIR_IN |
 584                               USB_RECIP_INTERFACE, 0x01, 0, op_mode, 1,
 585                               USB_CTRL_GET_TIMEOUT);
 586         saved = *op_mode;
 587         kfree(op_mode);
 588
 589         if (ret < 0)
 590                 return ret;
 591         else if (ret < 1)
 592                 return -EIO;
 593         else
 594                 return saved;
 595 }
 596
 597 /* Load a block of the second ("external") part of the firmware */
 598 static inline int at76_load_ext_fw_block(struct usb_device *udev, int blockno,
 599                                          void *block, int size)
 600 {
 601         return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
 602                                USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
 603                                0x0802, blockno, block, size,
 604                                USB_CTRL_GET_TIMEOUT);
 605 }
 606
 607 static inline int at76_get_hw_cfg(struct usb_device *udev,
 608                                   union at76_hwcfg *buf, int buf_size)
 609 {
 610         return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
 611                                USB_TYPE_VENDOR | USB_DIR_IN |
 612                                USB_RECIP_INTERFACE, 0x0a02, 0,
 613                                buf, buf_size, USB_CTRL_GET_TIMEOUT);
 614 }
 615
 616 /* Intersil boards use a different "value" for GetHWConfig requests */
 617 static inline int at76_get_hw_cfg_intersil(struct usb_device *udev,
 618                                            union at76_hwcfg *buf, int buf_size)
 619 {
 620         return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
 621                                USB_TYPE_VENDOR | USB_DIR_IN |
 622                                USB_RECIP_INTERFACE, 0x0902, 0,
 623                                buf, buf_size, USB_CTRL_GET_TIMEOUT);
 624 }
 625
 626 /* Get the hardware configuration for the adapter and put it to the appropriate
 627  * fields of 'priv' (the GetHWConfig request and interpretation of the result
 628  * depends on the board type) */
 629 static int at76_get_hw_config(struct at76_priv *priv)
 630 {
 631         int ret;
 632         union at76_hwcfg *hwcfg = kmalloc(sizeof(*hwcfg), GFP_KERNEL);
 633
 634         if (!hwcfg)
 635                 return -ENOMEM;
 636
 637         if (at76_is_intersil(priv->board_type)) {
 638                 ret = at76_get_hw_cfg_intersil(priv->udev, hwcfg,
 639                                                sizeof(hwcfg->i));
 640                 if (ret < 0)
 641                         goto exit;
 642                 memcpy(priv->mac_addr, hwcfg->i.mac_addr, ETH_ALEN);
 643                 priv->regulatory_domain = hwcfg->i.regulatory_domain;
 644         } else if (at76_is_503rfmd(priv->board_type)) {
 645                 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r3));
 646                 if (ret < 0)
 647                         goto exit;
 648                 memcpy(priv->mac_addr, hwcfg->r3.mac_addr, ETH_ALEN);
 649                 priv->regulatory_domain = hwcfg->r3.regulatory_domain;
 650         } else {
 651                 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r5));
 652                 if (ret < 0)
 653                         goto exit;
 654                 memcpy(priv->mac_addr, hwcfg->r5.mac_addr, ETH_ALEN);
 655                 priv->regulatory_domain = hwcfg->r5.regulatory_domain;
 656         }
 657
 658 exit:
 659         kfree(hwcfg);
 660         if (ret < 0)
 661                 wiphy_err(priv->hw->wiphy, "cannot get hw config (error %d)\n",
 662                           ret);
 663
 664         return ret;
 665 }
 666
 667 static struct reg_domain const *at76_get_reg_domain(u16 code)
 668 {
 669         int i;
 670         static struct reg_domain const fd_tab[] = {
 671                 { 0x10, "FCC (USA)", 0x7ff },   /* ch 1-11 */
 672                 { 0x20, "IC (Canada)", 0x7ff }, /* ch 1-11 */
 673                 { 0x30, "ETSI (most of Europe)", 0x1fff },      /* ch 1-13 */
 674                 { 0x31, "Spain", 0x600 },       /* ch 10-11 */
 675                 { 0x32, "France", 0x1e00 },     /* ch 10-13 */
 676                 { 0x40, "MKK (Japan)", 0x2000 },        /* ch 14 */
 677                 { 0x41, "MKK1 (Japan)", 0x3fff },       /* ch 1-14 */
 678                 { 0x50, "Israel", 0x3fc },      /* ch 3-9 */
 679                 { 0x00, "<unknown>", 0xffffffff }       /* ch 1-32 */
 680         };
 681
 682         /* Last entry is fallback for unknown domain code */
 683         for (i = 0; i < ARRAY_SIZE(fd_tab) - 1; i++)
 684                 if (code == fd_tab[i].code)
 685                         break;
 686
 687         return &fd_tab[i];
 688 }
 689
 690 static inline int at76_get_mib(struct usb_device *udev, u16 mib, void *buf,
 691                                int buf_size)
 692 {
 693         int ret;
 694
 695         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
 696                               USB_TYPE_VENDOR | USB_DIR_IN |
 697                               USB_RECIP_INTERFACE, mib << 8, 0, buf, buf_size,
 698                               USB_CTRL_GET_TIMEOUT);
 699         if (ret >= 0 && ret != buf_size)
 700                 return -EIO;
 701         return ret;
 702 }
 703
 704 /* Return positive number for status, negative for an error */
 705 static inline int at76_get_cmd_status(struct usb_device *udev, u8 cmd)
 706 {
 707         u8 *stat_buf;
 708         int ret;
 709
 710         stat_buf = kmalloc(40, GFP_NOIO);
 711         if (!stat_buf)
 712                 return -ENOMEM;
 713
 714         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x22,
 715                         USB_TYPE_VENDOR | USB_DIR_IN |
 716                         USB_RECIP_INTERFACE, cmd, 0, stat_buf,
 717                         40, USB_CTRL_GET_TIMEOUT);
 718         if (ret >= 0)
 719                 ret = stat_buf[5];
 720         kfree(stat_buf);
 721
 722         return ret;
 723 }
 724
 725 #define MAKE_CMD_CASE(c) case (c): return #c
 726 static const char *at76_get_cmd_string(u8 cmd_status)
 727 {
 728         switch (cmd_status) {
 729                 MAKE_CMD_CASE(CMD_SET_MIB);
 730                 MAKE_CMD_CASE(CMD_GET_MIB);
 731                 MAKE_CMD_CASE(CMD_SCAN);
 732                 MAKE_CMD_CASE(CMD_JOIN);
 733                 MAKE_CMD_CASE(CMD_START_IBSS);
 734                 MAKE_CMD_CASE(CMD_RADIO_ON);
 735                 MAKE_CMD_CASE(CMD_RADIO_OFF);
 736                 MAKE_CMD_CASE(CMD_STARTUP);
 737         }
 738
 739         return "UNKNOWN";
 740 }
 741
 742 static int at76_set_card_command(struct usb_device *udev, u8 cmd, void *buf,
 743                                  int buf_size)
 744 {
 745         int ret;
 746         struct at76_command *cmd_buf = kmalloc(sizeof(struct at76_command) +
 747                                                buf_size, GFP_KERNEL);
 748
 749         if (!cmd_buf)
 750                 return -ENOMEM;
 751
 752         cmd_buf->cmd = cmd;
 753         cmd_buf->reserved = 0;
 754         cmd_buf->size = cpu_to_le16(buf_size);
 755         memcpy(cmd_buf->data, buf, buf_size);
 756
 757         at76_dbg_dump(DBG_CMD, cmd_buf, sizeof(struct at76_command) + buf_size,
 758                       "issuing command %s (0x%02x)",
 759                       at76_get_cmd_string(cmd), cmd);
 760
 761         ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
 762                               USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
 763                               0, 0, cmd_buf,
 764                               sizeof(struct at76_command) + buf_size,
 765                               USB_CTRL_GET_TIMEOUT);
 766         kfree(cmd_buf);
 767         return ret;
 768 }
 769
 770 #define MAKE_CMD_STATUS_CASE(c) case (c): return #c
 771 static const char *at76_get_cmd_status_string(u8 cmd_status)
 772 {
 773         switch (cmd_status) {
 774                 MAKE_CMD_STATUS_CASE(CMD_STATUS_IDLE);
 775                 MAKE_CMD_STATUS_CASE(CMD_STATUS_COMPLETE);
 776                 MAKE_CMD_STATUS_CASE(CMD_STATUS_UNKNOWN);
 777                 MAKE_CMD_STATUS_CASE(CMD_STATUS_INVALID_PARAMETER);
 778                 MAKE_CMD_STATUS_CASE(CMD_STATUS_FUNCTION_NOT_SUPPORTED);
 779                 MAKE_CMD_STATUS_CASE(CMD_STATUS_TIME_OUT);
 780                 MAKE_CMD_STATUS_CASE(CMD_STATUS_IN_PROGRESS);
 781                 MAKE_CMD_STATUS_CASE(CMD_STATUS_HOST_FAILURE);
 782                 MAKE_CMD_STATUS_CASE(CMD_STATUS_SCAN_FAILED);
 783         }
 784
 785         return "UNKNOWN";
 786 }
 787
 788 /* Wait until the command is completed */
 789 static int at76_wait_completion(struct at76_priv *priv, int cmd)
 790 {
 791         int status = 0;
 792         unsigned long timeout = jiffies + CMD_COMPLETION_TIMEOUT;
 793
 794         do {
 795                 status = at76_get_cmd_status(priv->udev, cmd);
 796                 if (status < 0) {
 797                         wiphy_err(priv->hw->wiphy,
 798                                   "at76_get_cmd_status failed: %d\n",
 799                                   status);
 800                         break;
 801                 }
 802
 803                 at76_dbg(DBG_WAIT_COMPLETE,
 804                          "%s: Waiting on cmd %d, status = %d (%s)",
 805                          wiphy_name(priv->hw->wiphy), cmd, status,
 806                          at76_get_cmd_status_string(status));
 807
 808                 if (status != CMD_STATUS_IN_PROGRESS
 809                     && status != CMD_STATUS_IDLE)
 810                         break;
 811
 812                 schedule_timeout_interruptible(HZ / 10);        /* 100 ms */
 813                 if (time_after(jiffies, timeout)) {
 814                         wiphy_err(priv->hw->wiphy,
 815                                   "completion timeout for command %d\n", cmd);
 816                         status = -ETIMEDOUT;
 817                         break;
 818                 }
 819         } while (1);
 820
 821         return status;
 822 }
 823
 824 static int at76_set_mib(struct at76_priv *priv, struct set_mib_buffer *buf)
 825 {
 826         int ret;
 827
 828         ret = at76_set_card_command(priv->udev, CMD_SET_MIB, buf,
 829                                     offsetof(struct set_mib_buffer,
 830                                              data) + buf->size);
 831         if (ret < 0)
 832                 return ret;
 833
 834         ret = at76_wait_completion(priv, CMD_SET_MIB);
 835         if (ret != CMD_STATUS_COMPLETE) {
 836                 wiphy_info(priv->hw->wiphy,
 837                            "set_mib: at76_wait_completion failed with %d\n",
 838                            ret);
 839                 ret = -EIO;
 840         }
 841
 842         return ret;
 843 }
 844
 845 /* Return < 0 on error, == 0 if no command sent, == 1 if cmd sent */
 846 static int at76_set_radio(struct at76_priv *priv, int enable)
 847 {
 848         int ret;
 849         int cmd;
 850
 851         if (priv->radio_on == enable)
 852                 return 0;
 853
 854         cmd = enable ? CMD_RADIO_ON : CMD_RADIO_OFF;
 855
 856         ret = at76_set_card_command(priv->udev, cmd, NULL, 0);
 857         if (ret < 0)
 858                 wiphy_err(priv->hw->wiphy,
 859                           "at76_set_card_command(%d) failed: %d\n", cmd, ret);
 860         else
 861                 ret = 1;
 862
 863         priv->radio_on = enable;
 864         return ret;
 865 }
 866
 867 /* Set current power save mode (AT76_PM_OFF/AT76_PM_ON/AT76_PM_SMART) */
 868 static int at76_set_pm_mode(struct at76_priv *priv)
 869 {
 870         int ret = 0;
 871
 872         priv->mib_buf.type = MIB_MAC_MGMT;
 873         priv->mib_buf.size = 1;
 874         priv->mib_buf.index = offsetof(struct mib_mac_mgmt, power_mgmt_mode);
 875         priv->mib_buf.data.byte = priv->pm_mode;
 876
 877         ret = at76_set_mib(priv, &priv->mib_buf);
 878         if (ret < 0)
 879                 wiphy_err(priv->hw->wiphy, "set_mib (pm_mode) failed: %d\n",
 880                           ret);
 881
 882         return ret;
 883 }
 884
 885 static int at76_set_preamble(struct at76_priv *priv, u8 type)
 886 {
 887         int ret = 0;
 888
 889         priv->mib_buf.type = MIB_LOCAL;
 890         priv->mib_buf.size = 1;
 891         priv->mib_buf.index = offsetof(struct mib_local, preamble_type);
 892         priv->mib_buf.data.byte = type;
 893
 894         ret = at76_set_mib(priv, &priv->mib_buf);
 895         if (ret < 0)
 896                 wiphy_err(priv->hw->wiphy, "set_mib (preamble) failed: %d\n",
 897                           ret);
 898
 899         return ret;
 900 }
 901
 902 static int at76_set_frag(struct at76_priv *priv, u16 size)
 903 {
 904         int ret = 0;
 905
 906         priv->mib_buf.type = MIB_MAC;
 907         priv->mib_buf.size = 2;
 908         priv->mib_buf.index = offsetof(struct mib_mac, frag_threshold);
 909         priv->mib_buf.data.word = cpu_to_le16(size);
 910
 911         ret = at76_set_mib(priv, &priv->mib_buf);
 912         if (ret < 0)
 913                 wiphy_err(priv->hw->wiphy,
 914                           "set_mib (frag threshold) failed: %d\n", ret);
 915
 916         return ret;
 917 }
 918
 919 static int at76_set_rts(struct at76_priv *priv, u16 size)
 920 {
 921         int ret = 0;
 922
 923         priv->mib_buf.type = MIB_MAC;
 924         priv->mib_buf.size = 2;
 925         priv->mib_buf.index = offsetof(struct mib_mac, rts_threshold);
 926         priv->mib_buf.data.word = cpu_to_le16(size);
 927
 928         ret = at76_set_mib(priv, &priv->mib_buf);
 929         if (ret < 0)
 930                 wiphy_err(priv->hw->wiphy, "set_mib (rts) failed: %d\n", ret);
 931
 932         return ret;
 933 }
 934
 935 static int at76_set_autorate_fallback(struct at76_priv *priv, int onoff)
 936 {
 937         int ret = 0;
 938
 939         priv->mib_buf.type = MIB_LOCAL;
 940         priv->mib_buf.size = 1;
 941         priv->mib_buf.index = offsetof(struct mib_local, txautorate_fallback);
 942         priv->mib_buf.data.byte = onoff;
 943
 944         ret = at76_set_mib(priv, &priv->mib_buf);
 945         if (ret < 0)
 946                 wiphy_err(priv->hw->wiphy,
 947                           "set_mib (autorate fallback) failed: %d\n", ret);
 948
 949         return ret;
 950 }
 951
 952 static void at76_dump_mib_mac_addr(struct at76_priv *priv)
 953 {
 954         int i;
 955         int ret;
 956         struct mib_mac_addr *m = kmalloc(sizeof(struct mib_mac_addr),
 957                                          GFP_KERNEL);
 958
 959         if (!m)
 960                 return;
 961
 962         ret = at76_get_mib(priv->udev, MIB_MAC_ADDR, m,
 963                            sizeof(struct mib_mac_addr));
 964         if (ret < 0) {
 965                 wiphy_err(priv->hw->wiphy,
 966                           "at76_get_mib (mac_addr) failed: %d\n", ret);
 967                 goto exit;
 968         }
 969
 970         at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: mac_addr %pM res 0x%x 0x%x",
 971                  wiphy_name(priv->hw->wiphy),
 972                  m->mac_addr, m->res[0], m->res[1]);
 973         for (i = 0; i < ARRAY_SIZE(m->group_addr); i++)
 974                 at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: group addr %d: %pM, "
 975                          "status %d", wiphy_name(priv->hw->wiphy), i,
 976                          m->group_addr[i], m->group_addr_status[i]);
 977 exit:
 978         kfree(m);
 979 }
 980
 981 static void at76_dump_mib_mac_wep(struct at76_priv *priv)
 982 {
 983         int i;
 984         int ret;
 985         int key_len;
 986         struct mib_mac_wep *m = kmalloc(sizeof(struct mib_mac_wep), GFP_KERNEL);
 987
 988         if (!m)
 989                 return;
 990
 991         ret = at76_get_mib(priv->udev, MIB_MAC_WEP, m,
 992                            sizeof(struct mib_mac_wep));
 993         if (ret < 0) {
 994                 wiphy_err(priv->hw->wiphy,
 995                           "at76_get_mib (mac_wep) failed: %d\n", ret);
 996                 goto exit;
 997         }
 998
 999         at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: priv_invoked %u def_key_id %u "
1000                  "key_len %u excl_unencr %u wep_icv_err %u wep_excluded %u "
1001                  "encr_level %u key %d", wiphy_name(priv->hw->wiphy),
1002                  m->privacy_invoked, m->wep_default_key_id,
1003                  m->wep_key_mapping_len, m->exclude_unencrypted,
1004                  le32_to_cpu(m->wep_icv_error_count),
1005                  le32_to_cpu(m->wep_excluded_count), m->encryption_level,
1006                  m->wep_default_key_id);
1007
1008         key_len = (m->encryption_level == 1) ?
1009             WEP_SMALL_KEY_LEN : WEP_LARGE_KEY_LEN;
1010
1011         for (i = 0; i < WEP_KEYS; i++)
1012                 at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: key %d: %s",
1013                          wiphy_name(priv->hw->wiphy), i,
1014                          hex2str(m->wep_default_keyvalue[i], key_len));
1015 exit:
1016         kfree(m);
1017 }
1018
1019 static void at76_dump_mib_mac_mgmt(struct at76_priv *priv)
1020 {
1021         int ret;
1022         struct mib_mac_mgmt *m = kmalloc(sizeof(struct mib_mac_mgmt),
1023                                          GFP_KERNEL);
1024
1025         if (!m)
1026                 return;
1027
1028         ret = at76_get_mib(priv->udev, MIB_MAC_MGMT, m,
1029                            sizeof(struct mib_mac_mgmt));
1030         if (ret < 0) {
1031                 wiphy_err(priv->hw->wiphy,
1032                           "at76_get_mib (mac_mgmt) failed: %d\n", ret);
1033                 goto exit;
1034         }
1035
1036         at76_dbg(DBG_MIB, "%s: MIB MAC_MGMT: beacon_period %d CFP_max_duration "
1037                  "%d medium_occupancy_limit %d station_id 0x%x ATIM_window %d "
1038                  "CFP_mode %d privacy_opt_impl %d DTIM_period %d CFP_period %d "
1039                  "current_bssid %pM current_essid %s current_bss_type %d "
1040                  "pm_mode %d ibss_change %d res %d "
1041                  "multi_domain_capability_implemented %d "
1042                  "international_roaming %d country_string %.3s",
1043                  wiphy_name(priv->hw->wiphy), le16_to_cpu(m->beacon_period),
1044                  le16_to_cpu(m->CFP_max_duration),
1045                  le16_to_cpu(m->medium_occupancy_limit),
1046                  le16_to_cpu(m->station_id), le16_to_cpu(m->ATIM_window),
1047                  m->CFP_mode, m->privacy_option_implemented, m->DTIM_period,
1048                  m->CFP_period, m->current_bssid,
1049                  hex2str(m->current_essid, IW_ESSID_MAX_SIZE),
1050                  m->current_bss_type, m->power_mgmt_mode, m->ibss_change,
1051                  m->res, m->multi_domain_capability_implemented,
1052                  m->multi_domain_capability_enabled, m->country_string);
1053 exit:
1054         kfree(m);
1055 }
1056
1057 static void at76_dump_mib_mac(struct at76_priv *priv)
1058 {
1059         int ret;
1060         struct mib_mac *m = kmalloc(sizeof(struct mib_mac), GFP_KERNEL);
1061
1062         if (!m)
1063                 return;
1064
1065         ret = at76_get_mib(priv->udev, MIB_MAC, m, sizeof(struct mib_mac));
1066         if (ret < 0) {
1067                 wiphy_err(priv->hw->wiphy,
1068                           "at76_get_mib (mac) failed: %d\n", ret);
1069                 goto exit;
1070         }
1071
1072         at76_dbg(DBG_MIB, "%s: MIB MAC: max_tx_msdu_lifetime %d "
1073                  "max_rx_lifetime %d frag_threshold %d rts_threshold %d "
1074                  "cwmin %d cwmax %d short_retry_time %d long_retry_time %d "
1075                  "scan_type %d scan_channel %d probe_delay %u "
1076                  "min_channel_time %d max_channel_time %d listen_int %d "
1077                  "desired_ssid %s desired_bssid %pM desired_bsstype %d",
1078                  wiphy_name(priv->hw->wiphy),
1079                  le32_to_cpu(m->max_tx_msdu_lifetime),
1080                  le32_to_cpu(m->max_rx_lifetime),
1081                  le16_to_cpu(m->frag_threshold), le16_to_cpu(m->rts_threshold),
1082                  le16_to_cpu(m->cwmin), le16_to_cpu(m->cwmax),
1083                  m->short_retry_time, m->long_retry_time, m->scan_type,
1084                  m->scan_channel, le16_to_cpu(m->probe_delay),
1085                  le16_to_cpu(m->min_channel_time),
1086                  le16_to_cpu(m->max_channel_time),
1087                  le16_to_cpu(m->listen_interval),
1088                  hex2str(m->desired_ssid, IW_ESSID_MAX_SIZE),
1089                  m->desired_bssid, m->desired_bsstype);
1090 exit:
1091         kfree(m);
1092 }
1093
1094 static void at76_dump_mib_phy(struct at76_priv *priv)
1095 {
1096         int ret;
1097         struct mib_phy *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL);
1098
1099         if (!m)
1100                 return;
1101
1102         ret = at76_get_mib(priv->udev, MIB_PHY, m, sizeof(struct mib_phy));
1103         if (ret < 0) {
1104                 wiphy_err(priv->hw->wiphy,
1105                           "at76_get_mib (phy) failed: %d\n", ret);
1106                 goto exit;
1107         }
1108
1109         at76_dbg(DBG_MIB, "%s: MIB PHY: ed_threshold %d slot_time %d "
1110                  "sifs_time %d preamble_length %d plcp_header_length %d "
1111                  "mpdu_max_length %d cca_mode_supported %d operation_rate_set "
1112                  "0x%x 0x%x 0x%x 0x%x channel_id %d current_cca_mode %d "
1113                  "phy_type %d current_reg_domain %d",
1114                  wiphy_name(priv->hw->wiphy), le32_to_cpu(m->ed_threshold),
1115                  le16_to_cpu(m->slot_time), le16_to_cpu(m->sifs_time),
1116                  le16_to_cpu(m->preamble_length),
1117                  le16_to_cpu(m->plcp_header_length),
1118                  le16_to_cpu(m->mpdu_max_length),
1119                  le16_to_cpu(m->cca_mode_supported), m->operation_rate_set[0],
1120                  m->operation_rate_set[1], m->operation_rate_set[2],
1121                  m->operation_rate_set[3], m->channel_id, m->current_cca_mode,
1122                  m->phy_type, m->current_reg_domain);
1123 exit:
1124         kfree(m);
1125 }
1126
1127 static void at76_dump_mib_local(struct at76_priv *priv)
1128 {
1129         int ret;
1130         struct mib_local *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL);
1131
1132         if (!m)
1133                 return;
1134
1135         ret = at76_get_mib(priv->udev, MIB_LOCAL, m, sizeof(struct mib_local));
1136         if (ret < 0) {
1137                 wiphy_err(priv->hw->wiphy,
1138                           "at76_get_mib (local) failed: %d\n", ret);
1139                 goto exit;
1140         }
1141
1142         at76_dbg(DBG_MIB, "%s: MIB LOCAL: beacon_enable %d "
1143                  "txautorate_fallback %d ssid_size %d promiscuous_mode %d "
1144                  "preamble_type %d", wiphy_name(priv->hw->wiphy),
1145                  m->beacon_enable,
1146                  m->txautorate_fallback, m->ssid_size, m->promiscuous_mode,
1147                  m->preamble_type);
1148 exit:
1149         kfree(m);
1150 }
1151
1152 static void at76_dump_mib_mdomain(struct at76_priv *priv)
1153 {
1154         int ret;
1155         struct mib_mdomain *m = kmalloc(sizeof(struct mib_mdomain), GFP_KERNEL);
1156
1157         if (!m)
1158                 return;
1159
1160         ret = at76_get_mib(priv->udev, MIB_MDOMAIN, m,
1161                            sizeof(struct mib_mdomain));
1162         if (ret < 0) {
1163                 wiphy_err(priv->hw->wiphy,
1164                           "at76_get_mib (mdomain) failed: %d\n", ret);
1165                 goto exit;
1166         }
1167
1168         at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: channel_list %s",
1169                  wiphy_name(priv->hw->wiphy),
1170                  hex2str(m->channel_list, sizeof(m->channel_list)));
1171
1172         at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: tx_powerlevel %s",
1173                  wiphy_name(priv->hw->wiphy),
1174                  hex2str(m->tx_powerlevel, sizeof(m->tx_powerlevel)));
1175 exit:
1176         kfree(m);
1177 }
1178
1179 /* Enable monitor mode */
1180 static int at76_start_monitor(struct at76_priv *priv)
1181 {
1182         struct at76_req_scan scan;
1183         int ret;
1184
1185         memset(&scan, 0, sizeof(struct at76_req_scan));
1186         memset(scan.bssid, 0xff, ETH_ALEN);
1187
1188         scan.channel = priv->channel;
1189         scan.scan_type = SCAN_TYPE_PASSIVE;
1190         scan.international_scan = 0;
1191         scan.min_channel_time = cpu_to_le16(priv->scan_min_time);
1192         scan.max_channel_time = cpu_to_le16(priv->scan_max_time);
1193         scan.probe_delay = cpu_to_le16(0);
1194
1195         ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
1196         if (ret >= 0)
1197                 ret = at76_get_cmd_status(priv->udev, CMD_SCAN);
1198
1199         return ret;
1200 }
1201
1202 /* Calculate padding from txbuf->wlength (which excludes the USB TX header),
1203    likely to compensate a flaw in the AT76C503A USB part ... */
1204 static inline int at76_calc_padding(int wlen)
1205 {
1206         /* add the USB TX header */
1207         wlen += AT76_TX_HDRLEN;
1208
1209         wlen = wlen % 64;
1210
1211         if (wlen < 50)
1212                 return 50 - wlen;
1213
1214         if (wlen >= 61)
1215                 return 64 + 50 - wlen;
1216
1217         return 0;
1218 }
1219
1220 static void at76_rx_callback(struct urb *urb)
1221 {
1222         struct at76_priv *priv = urb->context;
1223
1224         priv->rx_tasklet.data = (unsigned long)urb;
1225         tasklet_schedule(&priv->rx_tasklet);
1226 }
1227
1228 static int at76_submit_rx_urb(struct at76_priv *priv)
1229 {
1230         int ret;
1231         int size;
1232         struct sk_buff *skb = priv->rx_skb;
1233
1234         if (!priv->rx_urb) {
1235                 wiphy_err(priv->hw->wiphy, "%s: priv->rx_urb is null\n",
1236                           __func__);
1237                 return -EFAULT;
1238         }
1239
1240         if (!skb) {
1241                 skb = dev_alloc_skb(sizeof(struct at76_rx_buffer));
1242                 if (!skb) {
1243                         wiphy_err(priv->hw->wiphy,
1244                                   "cannot allocate rx skbuff\n");
1245                         ret = -ENOMEM;
1246                         goto exit;
1247                 }
1248                 priv->rx_skb = skb;
1249         } else {
1250                 skb_push(skb, skb_headroom(skb));
1251                 skb_trim(skb, 0);
1252         }
1253
1254         size = skb_tailroom(skb);
1255         usb_fill_bulk_urb(priv->rx_urb, priv->udev, priv->rx_pipe,
1256                           skb_put(skb, size), size, at76_rx_callback, priv);
1257         ret = usb_submit_urb(priv->rx_urb, GFP_ATOMIC);
1258         if (ret < 0) {
1259                 if (ret == -ENODEV)
1260                         at76_dbg(DBG_DEVSTART,
1261                                  "usb_submit_urb returned -ENODEV");
1262                 else
1263                         wiphy_err(priv->hw->wiphy,
1264                                   "rx, usb_submit_urb failed: %d\n", ret);
1265         }
1266
1267 exit:
1268         if (ret < 0 && ret != -ENODEV)
1269                 wiphy_err(priv->hw->wiphy,
1270                           "cannot submit rx urb - please unload the driver and/or power cycle the device\n");
1271
1272         return ret;
1273 }
1274
1275 /* Download external firmware */
1276 static int at76_load_external_fw(struct usb_device *udev, struct fwentry *fwe)
1277 {
1278         int ret;
1279         int op_mode;
1280         int blockno = 0;
1281         int bsize;
1282         u8 *block;
1283         u8 *buf = fwe->extfw;
1284         int size = fwe->extfw_size;
1285
1286         if (!buf || !size)
1287                 return -ENOENT;
1288
1289         op_mode = at76_get_op_mode(udev);
1290         at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
1291
1292         if (op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
1293                 dev_printk(KERN_ERR, &udev->dev, "unexpected opmode %d\n",
1294                            op_mode);
1295                 return -EINVAL;
1296         }
1297
1298         block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
1299         if (!block)
1300                 return -ENOMEM;
1301
1302         at76_dbg(DBG_DEVSTART, "downloading external firmware");
1303
1304         /* for fw >= 0.100, the device needs an extra empty block */
1305         do {
1306                 bsize = min_t(int, size, FW_BLOCK_SIZE);
1307                 memcpy(block, buf, bsize);
1308                 at76_dbg(DBG_DEVSTART,
1309                          "ext fw, size left = %5d, bsize = %4d, blockno = %2d",
1310                          size, bsize, blockno);
1311                 ret = at76_load_ext_fw_block(udev, blockno, block, bsize);
1312                 if (ret != bsize) {
1313                         dev_printk(KERN_ERR, &udev->dev,
1314                                    "loading %dth firmware block failed: %d\n",
1315                                    blockno, ret);
1316                         goto exit;
1317                 }
1318                 buf += bsize;
1319                 size -= bsize;
1320                 blockno++;
1321         } while (bsize > 0);
1322
1323         if (at76_is_505a(fwe->board_type)) {
1324                 at76_dbg(DBG_DEVSTART, "200 ms delay for 505a");
1325                 schedule_timeout_interruptible(HZ / 5 + 1);
1326         }
1327
1328 exit:
1329         kfree(block);
1330         if (ret < 0)
1331                 dev_printk(KERN_ERR, &udev->dev,
1332                            "downloading external firmware failed: %d\n", ret);
1333         return ret;
1334 }
1335
1336 /* Download internal firmware */
1337 static int at76_load_internal_fw(struct usb_device *udev, struct fwentry *fwe)
1338 {
1339         int ret;
1340         int need_remap = !at76_is_505a(fwe->board_type);
1341
1342         ret = at76_usbdfu_download(udev, fwe->intfw, fwe->intfw_size,
1343                                    need_remap ? 0 : 2 * HZ);
1344
1345         if (ret < 0) {
1346                 dev_printk(KERN_ERR, &udev->dev,
1347                            "downloading internal fw failed with %d\n", ret);
1348                 goto exit;
1349         }
1350
1351         at76_dbg(DBG_DEVSTART, "sending REMAP");
1352
1353         /* no REMAP for 505A (see SF driver) */
1354         if (need_remap) {
1355                 ret = at76_remap(udev);
1356                 if (ret < 0) {
1357                         dev_printk(KERN_ERR, &udev->dev,
1358                                    "sending REMAP failed with %d\n", ret);
1359                         goto exit;
1360                 }
1361         }
1362
1363         at76_dbg(DBG_DEVSTART, "sleeping for 2 seconds");
1364         schedule_timeout_interruptible(2 * HZ + 1);
1365         usb_reset_device(udev);
1366
1367 exit:
1368         return ret;
1369 }
1370
1371 static int at76_startup_device(struct at76_priv *priv)
1372 {
1373         struct at76_card_config *ccfg = &priv->card_config;
1374         int ret;
1375
1376         at76_dbg(DBG_PARAMS,
1377                  "%s param: ssid %.*s (%s) mode %s ch %d wep %s key %d "
1378                  "keylen %d", wiphy_name(priv->hw->wiphy), priv->essid_size,
1379                  priv->essid, hex2str(priv->essid, IW_ESSID_MAX_SIZE),
1380                  priv->iw_mode == IW_MODE_ADHOC ? "adhoc" : "infra",
1381                  priv->channel, priv->wep_enabled ? "enabled" : "disabled",
1382                  priv->wep_key_id, priv->wep_keys_len[priv->wep_key_id]);
1383         at76_dbg(DBG_PARAMS,
1384                  "%s param: preamble %s rts %d retry %d frag %d "
1385                  "txrate %s auth_mode %d", wiphy_name(priv->hw->wiphy),
1386                  preambles[priv->preamble_type], priv->rts_threshold,
1387                  priv->short_retry_limit, priv->frag_threshold,
1388                  priv->txrate == TX_RATE_1MBIT ? "1MBit" : priv->txrate ==
1389                  TX_RATE_2MBIT ? "2MBit" : priv->txrate ==
1390                  TX_RATE_5_5MBIT ? "5.5MBit" : priv->txrate ==
1391                  TX_RATE_11MBIT ? "11MBit" : priv->txrate ==
1392                  TX_RATE_AUTO ? "auto" : "<invalid>", priv->auth_mode);
1393         at76_dbg(DBG_PARAMS,
1394                  "%s param: pm_mode %d pm_period %d auth_mode %s "
1395                  "scan_times %d %d scan_mode %s",
1396                  wiphy_name(priv->hw->wiphy), priv->pm_mode, priv->pm_period,
1397                  priv->auth_mode == WLAN_AUTH_OPEN ? "open" : "shared_secret",
1398                  priv->scan_min_time, priv->scan_max_time,
1399                  priv->scan_mode == SCAN_TYPE_ACTIVE ? "active" : "passive");
1400
1401         memset(ccfg, 0, sizeof(struct at76_card_config));
1402         ccfg->promiscuous_mode = 0;
1403         ccfg->short_retry_limit = priv->short_retry_limit;
1404
1405         if (priv->wep_enabled) {
1406                 if (priv->wep_keys_len[priv->wep_key_id] > WEP_SMALL_KEY_LEN)
1407                         ccfg->encryption_type = 2;
1408                 else
1409                         ccfg->encryption_type = 1;
1410
1411                 /* jal: always exclude unencrypted if WEP is active */
1412                 ccfg->exclude_unencrypted = 1;
1413         } else {
1414                 ccfg->exclude_unencrypted = 0;
1415                 ccfg->encryption_type = 0;
1416         }
1417
1418         ccfg->rts_threshold = cpu_to_le16(priv->rts_threshold);
1419         ccfg->fragmentation_threshold = cpu_to_le16(priv->frag_threshold);
1420
1421         memcpy(ccfg->basic_rate_set, hw_rates, 4);
1422         /* jal: really needed, we do a set_mib for autorate later ??? */
1423         ccfg->auto_rate_fallback = (priv->txrate == TX_RATE_AUTO ? 1 : 0);
1424         ccfg->channel = priv->channel;
1425         ccfg->privacy_invoked = priv->wep_enabled;
1426         memcpy(ccfg->current_ssid, priv->essid, IW_ESSID_MAX_SIZE);
1427         ccfg->ssid_len = priv->essid_size;
1428
1429         ccfg->wep_default_key_id = priv->wep_key_id;
1430         memcpy(ccfg->wep_default_key_value, priv->wep_keys,
1431                sizeof(priv->wep_keys));
1432
1433         ccfg->short_preamble = priv->preamble_type;
1434         ccfg->beacon_period = cpu_to_le16(priv->beacon_period);
1435
1436         ret = at76_set_card_command(priv->udev, CMD_STARTUP, &priv->card_config,
1437                                     sizeof(struct at76_card_config));
1438         if (ret < 0) {
1439                 wiphy_err(priv->hw->wiphy, "at76_set_card_command failed: %d\n",
1440                           ret);
1441                 return ret;
1442         }
1443
1444         at76_wait_completion(priv, CMD_STARTUP);
1445
1446         /* remove BSSID from previous run */
1447         memset(priv->bssid, 0, ETH_ALEN);
1448
1449         if (at76_set_radio(priv, 1) == 1)
1450                 at76_wait_completion(priv, CMD_RADIO_ON);
1451
1452         ret = at76_set_preamble(priv, priv->preamble_type);
1453         if (ret < 0)
1454                 return ret;
1455
1456         ret = at76_set_frag(priv, priv->frag_threshold);
1457         if (ret < 0)
1458                 return ret;
1459
1460         ret = at76_set_rts(priv, priv->rts_threshold);
1461         if (ret < 0)
1462                 return ret;
1463
1464         ret = at76_set_autorate_fallback(priv,
1465                                          priv->txrate == TX_RATE_AUTO ? 1 : 0);
1466         if (ret < 0)
1467                 return ret;
1468
1469         ret = at76_set_pm_mode(priv);
1470         if (ret < 0)
1471                 return ret;
1472
1473         if (at76_debug & DBG_MIB) {
1474                 at76_dump_mib_mac(priv);
1475                 at76_dump_mib_mac_addr(priv);
1476                 at76_dump_mib_mac_mgmt(priv);
1477                 at76_dump_mib_mac_wep(priv);
1478                 at76_dump_mib_mdomain(priv);
1479                 at76_dump_mib_phy(priv);
1480                 at76_dump_mib_local(priv);
1481         }
1482
1483         return 0;
1484 }
1485
1486 /* Enable or disable promiscuous mode */
1487 static void at76_work_set_promisc(struct work_struct *work)
1488 {
1489         struct at76_priv *priv = container_of(work, struct at76_priv,
1490                                               work_set_promisc);
1491         int ret = 0;
1492
1493         if (priv->device_unplugged)
1494                 return;
1495
1496         mutex_lock(&priv->mtx);
1497
1498         priv->mib_buf.type = MIB_LOCAL;
1499         priv->mib_buf.size = 1;
1500         priv->mib_buf.index = offsetof(struct mib_local, promiscuous_mode);
1501         priv->mib_buf.data.byte = priv->promisc ? 1 : 0;
1502
1503         ret = at76_set_mib(priv, &priv->mib_buf);
1504         if (ret < 0)
1505                 wiphy_err(priv->hw->wiphy,
1506                           "set_mib (promiscuous_mode) failed: %d\n", ret);
1507
1508         mutex_unlock(&priv->mtx);
1509 }
1510
1511 /* Submit Rx urb back to the device */
1512 static void at76_work_submit_rx(struct work_struct *work)
1513 {
1514         struct at76_priv *priv = container_of(work, struct at76_priv,
1515                                               work_submit_rx);
1516
1517         mutex_lock(&priv->mtx);
1518         at76_submit_rx_urb(priv);
1519         mutex_unlock(&priv->mtx);
1520 }
1521
1522 static void at76_rx_tasklet(unsigned long param)
1523 {
1524         struct urb *urb = (struct urb *)param;
1525         struct at76_priv *priv = urb->context;
1526         struct at76_rx_buffer *buf;
1527         struct ieee80211_rx_status rx_status = { 0 };
1528
1529         if (priv->device_unplugged) {
1530                 at76_dbg(DBG_DEVSTART, "device unplugged");
1531                 if (urb)
1532                         at76_dbg(DBG_DEVSTART, "urb status %d", urb->status);
1533                 return;
1534         }
1535
1536         if (!priv->rx_skb || !priv->rx_skb->data)
1537                 return;
1538
1539         buf = (struct at76_rx_buffer *)priv->rx_skb->data;
1540
1541         if (urb->status != 0) {
1542                 if (urb->status != -ENOENT && urb->status != -ECONNRESET)
1543                         at76_dbg(DBG_URB,
1544                                  "%s %s: - nonzero Rx bulk status received: %d",
1545                                  __func__, wiphy_name(priv->hw->wiphy),
1546                                  urb->status);
1547                 return;
1548         }
1549
1550         at76_dbg(DBG_RX_ATMEL_HDR,
1551                  "%s: rx frame: rate %d rssi %d noise %d link %d",
1552                  wiphy_name(priv->hw->wiphy), buf->rx_rate, buf->rssi,
1553                  buf->noise_level, buf->link_quality);
1554
1555         skb_pull(priv->rx_skb, AT76_RX_HDRLEN);
1556         skb_trim(priv->rx_skb, le16_to_cpu(buf->wlength));
1557         at76_dbg_dump(DBG_RX_DATA, priv->rx_skb->data,
1558                       priv->rx_skb->len, "RX: len=%d", priv->rx_skb->len);
1559
1560         rx_status.signal = buf->rssi;
1561         rx_status.flag |= RX_FLAG_DECRYPTED;
1562         rx_status.flag |= RX_FLAG_IV_STRIPPED;
1563
1564         at76_dbg(DBG_MAC80211, "calling ieee80211_rx_irqsafe(): %d/%d",
1565                  priv->rx_skb->len, priv->rx_skb->data_len);
1566         memcpy(IEEE80211_SKB_RXCB(priv->rx_skb), &rx_status, sizeof(rx_status));
1567         ieee80211_rx_irqsafe(priv->hw, priv->rx_skb);
1568
1569         /* Use a new skb for the next receive */
1570         priv->rx_skb = NULL;
1571
1572         at76_submit_rx_urb(priv);
1573 }
1574
1575 /* Load firmware into kernel memory and parse it */
1576 static struct fwentry *at76_load_firmware(struct usb_device *udev,
1577                                           enum board_type board_type)
1578 {
1579         int ret;
1580         char *str;
1581         struct at76_fw_header *fwh;
1582         struct fwentry *fwe = &firmwares[board_type];
1583
1584         mutex_lock(&fw_mutex);
1585
1586         if (fwe->loaded) {
1587                 at76_dbg(DBG_FW, "re-using previously loaded fw");
1588                 goto exit;
1589         }
1590
1591         at76_dbg(DBG_FW, "downloading firmware %s", fwe->fwname);
1592         ret = request_firmware(&fwe->fw, fwe->fwname, &udev->dev);
1593         if (ret < 0) {
1594                 dev_printk(KERN_ERR, &udev->dev, "firmware %s not found!\n",
1595                            fwe->fwname);
1596                 dev_printk(KERN_ERR, &udev->dev,
1597                            "you may need to download the firmware from "
1598                            "http://developer.berlios.de/projects/at76c503a/\n");
1599                 goto exit;
1600         }
1601
1602         at76_dbg(DBG_FW, "got it.");
1603         fwh = (struct at76_fw_header *)(fwe->fw->data);
1604
1605         if (fwe->fw->size <= sizeof(*fwh)) {
1606                 dev_printk(KERN_ERR, &udev->dev,
1607                            "firmware is too short (0x%zx)\n", fwe->fw->size);
1608                 goto exit;
1609         }
1610
1611         /* CRC currently not checked */
1612         fwe->board_type = le32_to_cpu(fwh->board_type);
1613         if (fwe->board_type != board_type) {
1614                 dev_printk(KERN_ERR, &udev->dev,
1615                            "board type mismatch, requested %u, got %u\n",
1616                            board_type, fwe->board_type);
1617                 goto exit;
1618         }
1619
1620         fwe->fw_version.major = fwh->major;
1621         fwe->fw_version.minor = fwh->minor;
1622         fwe->fw_version.patch = fwh->patch;
1623         fwe->fw_version.build = fwh->build;
1624
1625         str = (char *)fwh + le32_to_cpu(fwh->str_offset);
1626         fwe->intfw = (u8 *)fwh + le32_to_cpu(fwh->int_fw_offset);
1627         fwe->intfw_size = le32_to_cpu(fwh->int_fw_len);
1628         fwe->extfw = (u8 *)fwh + le32_to_cpu(fwh->ext_fw_offset);
1629         fwe->extfw_size = le32_to_cpu(fwh->ext_fw_len);
1630
1631         fwe->loaded = 1;
1632
1633         dev_printk(KERN_DEBUG, &udev->dev,
1634                    "using firmware %s (version %d.%d.%d-%d)\n",
1635                    fwe->fwname, fwh->major, fwh->minor, fwh->patch, fwh->build);
1636
1637         at76_dbg(DBG_DEVSTART, "board %u, int %d:%d, ext %d:%d", board_type,
1638                  le32_to_cpu(fwh->int_fw_offset), le32_to_cpu(fwh->int_fw_len),
1639                  le32_to_cpu(fwh->ext_fw_offset), le32_to_cpu(fwh->ext_fw_len));
1640         at76_dbg(DBG_DEVSTART, "firmware id %s", str);
1641
1642 exit:
1643         mutex_unlock(&fw_mutex);
1644
1645         if (fwe->loaded)
1646                 return fwe;
1647         else
1648                 return NULL;
1649 }
1650
1651 static int at76_join(struct at76_priv *priv)
1652 {
1653         struct at76_req_join join;
1654         int ret;
1655
1656         memset(&join, 0, sizeof(struct at76_req_join));
1657         memcpy(join.essid, priv->essid, priv->essid_size);
1658         join.essid_size = priv->essid_size;
1659         memcpy(join.bssid, priv->bssid, ETH_ALEN);
1660         join.bss_type = INFRASTRUCTURE_MODE;
1661         join.channel = priv->channel;
1662         join.timeout = cpu_to_le16(2000);
1663
1664         at76_dbg(DBG_MAC80211, "%s: sending CMD_JOIN", __func__);
1665         ret = at76_set_card_command(priv->udev, CMD_JOIN, &join,
1666                                     sizeof(struct at76_req_join));
1667
1668         if (ret < 0) {
1669                 wiphy_err(priv->hw->wiphy, "at76_set_card_command failed: %d\n",
1670                           ret);
1671                 return 0;
1672         }
1673
1674         ret = at76_wait_completion(priv, CMD_JOIN);
1675         at76_dbg(DBG_MAC80211, "%s: CMD_JOIN returned: 0x%02x", __func__, ret);
1676         if (ret != CMD_STATUS_COMPLETE) {
1677                 wiphy_err(priv->hw->wiphy, "at76_wait_completion failed: %d\n",
1678                           ret);
1679                 return 0;
1680         }
1681
1682         at76_set_pm_mode(priv);
1683
1684         return 0;
1685 }
1686
1687 static void at76_work_join_bssid(struct work_struct *work)
1688 {
1689         struct at76_priv *priv = container_of(work, struct at76_priv,
1690                                               work_join_bssid);
1691
1692         if (priv->device_unplugged)
1693                 return;
1694
1695         mutex_lock(&priv->mtx);
1696
1697         if (is_valid_ether_addr(priv->bssid))
1698                 at76_join(priv);
1699
1700         mutex_unlock(&priv->mtx);
1701 }
1702
1703 static void at76_mac80211_tx_callback(struct urb *urb)
1704 {
1705         struct at76_priv *priv = urb->context;
1706         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb);
1707
1708         at76_dbg(DBG_MAC80211, "%s()", __func__);
1709
1710         switch (urb->status) {
1711         case 0:
1712                 /* success */
1713                 info->flags |= IEEE80211_TX_STAT_ACK;
1714                 break;
1715         case -ENOENT:
1716         case -ECONNRESET:
1717                 /* fail, urb has been unlinked */
1718                 /* FIXME: add error message */
1719                 break;
1720         default:
1721                 at76_dbg(DBG_URB, "%s - nonzero tx status received: %d",
1722                          __func__, urb->status);
1723                 break;
1724         }
1725
1726         memset(&info->status, 0, sizeof(info->status));
1727
1728         ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb);
1729
1730         priv->tx_skb = NULL;
1731
1732         ieee80211_wake_queues(priv->hw);
1733 }
1734
1735 static int at76_mac80211_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
1736 {
1737         struct at76_priv *priv = hw->priv;
1738         struct at76_tx_buffer *tx_buffer = priv->bulk_out_buffer;
1739         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1740         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1741         int padding, submit_len, ret;
1742
1743         at76_dbg(DBG_MAC80211, "%s()", __func__);
1744
1745         if (priv->tx_urb->status == -EINPROGRESS) {
1746                 wiphy_err(priv->hw->wiphy,
1747                           "%s called while tx urb is pending\n", __func__);
1748                 return NETDEV_TX_BUSY;
1749         }
1750
1751         /* The following code lines are important when the device is going to
1752          * authenticate with a new bssid. The driver must send CMD_JOIN before
1753          * an authentication frame is transmitted. For this to succeed, the
1754          * correct bssid of the AP must be known. As mac80211 does not inform
1755          * drivers about the bssid prior to the authentication process the
1756          * following workaround is necessary. If the TX frame is an
1757          * authentication frame extract the bssid and send the CMD_JOIN. */
1758         if (mgmt->frame_control & cpu_to_le16(IEEE80211_STYPE_AUTH)) {
1759                 if (compare_ether_addr(priv->bssid, mgmt->bssid)) {
1760                         memcpy(priv->bssid, mgmt->bssid, ETH_ALEN);
1761                         ieee80211_queue_work(hw, &priv->work_join_bssid);
1762                         return NETDEV_TX_BUSY;
1763                 }
1764         }
1765
1766         ieee80211_stop_queues(hw);
1767
1768         at76_ledtrig_tx_activity();     /* tell ledtrigger we send a packet */
1769
1770         WARN_ON(priv->tx_skb != NULL);
1771
1772         priv->tx_skb = skb;
1773         padding = at76_calc_padding(skb->len);
1774         submit_len = AT76_TX_HDRLEN + skb->len + padding;
1775
1776         /* setup 'Atmel' header */
1777         memset(tx_buffer, 0, sizeof(*tx_buffer));
1778         tx_buffer->padding = padding;
1779         tx_buffer->wlength = cpu_to_le16(skb->len);
1780         tx_buffer->tx_rate = ieee80211_get_tx_rate(hw, info)->hw_value;
1781         memset(tx_buffer->reserved, 0, sizeof(tx_buffer->reserved));
1782         memcpy(tx_buffer->packet, skb->data, skb->len);
1783
1784         at76_dbg(DBG_TX_DATA, "%s tx: wlen 0x%x pad 0x%x rate %d hdr",
1785                  wiphy_name(priv->hw->wiphy), le16_to_cpu(tx_buffer->wlength),
1786                  tx_buffer->padding, tx_buffer->tx_rate);
1787
1788         /* send stuff */
1789         at76_dbg_dump(DBG_TX_DATA_CONTENT, tx_buffer, submit_len,
1790                       "%s(): tx_buffer %d bytes:", __func__, submit_len);
1791         usb_fill_bulk_urb(priv->tx_urb, priv->udev, priv->tx_pipe, tx_buffer,
1792                           submit_len, at76_mac80211_tx_callback, priv);
1793         ret = usb_submit_urb(priv->tx_urb, GFP_ATOMIC);
1794         if (ret) {
1795                 wiphy_err(priv->hw->wiphy, "error in tx submit urb: %d\n", ret);
1796                 if (ret == -EINVAL)
1797                         wiphy_err(priv->hw->wiphy,
1798                                   "-einval: tx urb %p hcpriv %p complete %p\n",
1799                                   priv->tx_urb,
1800                                   priv->tx_urb->hcpriv, priv->tx_urb->complete);
1801         }
1802
1803         return 0;
1804 }
1805
1806 static int at76_mac80211_start(struct ieee80211_hw *hw)
1807 {
1808         struct at76_priv *priv = hw->priv;
1809         int ret;
1810
1811         at76_dbg(DBG_MAC80211, "%s()", __func__);
1812
1813         mutex_lock(&priv->mtx);
1814
1815         ret = at76_submit_rx_urb(priv);
1816         if (ret < 0) {
1817                 wiphy_err(priv->hw->wiphy, "open: submit_rx_urb failed: %d\n",
1818                           ret);
1819                 goto error;
1820         }
1821
1822         at76_startup_device(priv);
1823
1824         at76_start_monitor(priv);
1825
1826 error:
1827         mutex_unlock(&priv->mtx);
1828
1829         return 0;
1830 }
1831
1832 static void at76_mac80211_stop(struct ieee80211_hw *hw)
1833 {
1834         struct at76_priv *priv = hw->priv;
1835
1836         at76_dbg(DBG_MAC80211, "%s()", __func__);
1837
1838         cancel_delayed_work(&priv->dwork_hw_scan);
1839         cancel_work_sync(&priv->work_join_bssid);
1840         cancel_work_sync(&priv->work_set_promisc);
1841
1842         mutex_lock(&priv->mtx);
1843
1844         if (!priv->device_unplugged) {
1845                 /* We are called by "ifconfig ethX down", not because the
1846                  * device is not available anymore. */
1847                 at76_set_radio(priv, 0);
1848
1849                 /* We unlink rx_urb because at76_open() re-submits it.
1850                  * If unplugged, at76_delete_device() takes care of it. */
1851                 usb_kill_urb(priv->rx_urb);
1852         }
1853
1854         mutex_unlock(&priv->mtx);
1855 }
1856
1857 static int at76_add_interface(struct ieee80211_hw *hw,
1858                               struct ieee80211_vif *vif)
1859 {
1860         struct at76_priv *priv = hw->priv;
1861         int ret = 0;
1862
1863         at76_dbg(DBG_MAC80211, "%s()", __func__);
1864
1865         mutex_lock(&priv->mtx);
1866
1867         switch (vif->type) {
1868         case NL80211_IFTYPE_STATION:
1869                 priv->iw_mode = IW_MODE_INFRA;
1870                 break;
1871         default:
1872                 ret = -EOPNOTSUPP;
1873                 goto exit;
1874         }
1875
1876 exit:
1877         mutex_unlock(&priv->mtx);
1878
1879         return ret;
1880 }
1881
1882 static void at76_remove_interface(struct ieee80211_hw *hw,
1883                                   struct ieee80211_vif *vif)
1884 {
1885         at76_dbg(DBG_MAC80211, "%s()", __func__);
1886 }
1887
1888 static void at76_dwork_hw_scan(struct work_struct *work)
1889 {
1890         struct at76_priv *priv = container_of(work, struct at76_priv,
1891                                               dwork_hw_scan.work);
1892         int ret;
1893
1894         if (priv->device_unplugged)
1895                 return;
1896
1897         mutex_lock(&priv->mtx);
1898
1899         ret = at76_get_cmd_status(priv->udev, CMD_SCAN);
1900         at76_dbg(DBG_MAC80211, "%s: CMD_SCAN status 0x%02x", __func__, ret);
1901
1902         /* FIXME: add maximum time for scan to complete */
1903
1904         if (ret != CMD_STATUS_COMPLETE) {
1905                 ieee80211_queue_delayed_work(priv->hw, &priv->dwork_hw_scan,
1906                                              SCAN_POLL_INTERVAL);
1907                 mutex_unlock(&priv->mtx);
1908                 return;
1909         }
1910
1911         if (is_valid_ether_addr(priv->bssid))
1912                 at76_join(priv);
1913
1914         mutex_unlock(&priv->mtx);
1915
1916         ieee80211_scan_completed(priv->hw, false);
1917
1918         ieee80211_wake_queues(priv->hw);
1919 }
1920
1921 static int at76_hw_scan(struct ieee80211_hw *hw,
1922                         struct ieee80211_vif *vif,
1923                         struct cfg80211_scan_request *req)
1924 {
1925         struct at76_priv *priv = hw->priv;
1926         struct at76_req_scan scan;
1927         u8 *ssid = NULL;
1928         int ret, len = 0;
1929
1930         at76_dbg(DBG_MAC80211, "%s():", __func__);
1931
1932         if (priv->device_unplugged)
1933                 return 0;
1934
1935         mutex_lock(&priv->mtx);
1936
1937         ieee80211_stop_queues(hw);
1938
1939         memset(&scan, 0, sizeof(struct at76_req_scan));
1940         memset(scan.bssid, 0xFF, ETH_ALEN);
1941
1942         if (req->n_ssids) {
1943                 scan.scan_type = SCAN_TYPE_ACTIVE;
1944                 ssid = req->ssids[0].ssid;
1945                 len = req->ssids[0].ssid_len;
1946         } else {
1947                 scan.scan_type = SCAN_TYPE_PASSIVE;
1948         }
1949
1950         if (len) {
1951                 memcpy(scan.essid, ssid, len);
1952                 scan.essid_size = len;
1953         }
1954
1955         scan.min_channel_time = cpu_to_le16(priv->scan_min_time);
1956         scan.max_channel_time = cpu_to_le16(priv->scan_max_time);
1957         scan.probe_delay = cpu_to_le16(priv->scan_min_time * 1000);
1958         scan.international_scan = 0;
1959
1960         at76_dbg(DBG_MAC80211, "%s: sending CMD_SCAN", __func__);
1961         ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
1962
1963         if (ret < 0) {
1964                 err("CMD_SCAN failed: %d", ret);
1965                 goto exit;
1966         }
1967
1968         ieee80211_queue_delayed_work(priv->hw, &priv->dwork_hw_scan,
1969                                      SCAN_POLL_INTERVAL);
1970
1971 exit:
1972         mutex_unlock(&priv->mtx);
1973
1974         return 0;
1975 }
1976
1977 static int at76_config(struct ieee80211_hw *hw, u32 changed)
1978 {
1979         struct at76_priv *priv = hw->priv;
1980
1981         at76_dbg(DBG_MAC80211, "%s(): channel %d",
1982                  __func__, hw->conf.channel->hw_value);
1983         at76_dbg_dump(DBG_MAC80211, priv->bssid, ETH_ALEN, "bssid:");
1984
1985         mutex_lock(&priv->mtx);
1986
1987         priv->channel = hw->conf.channel->hw_value;
1988
1989         if (is_valid_ether_addr(priv->bssid))
1990                 at76_join(priv);
1991         else
1992                 at76_start_monitor(priv);
1993
1994         mutex_unlock(&priv->mtx);
1995
1996         return 0;
1997 }
1998
1999 static void at76_bss_info_changed(struct ieee80211_hw *hw,
2000                                   struct ieee80211_vif *vif,
2001                                   struct ieee80211_bss_conf *conf,
2002                                   u32 changed)
2003 {
2004         struct at76_priv *priv = hw->priv;
2005
2006         at76_dbg(DBG_MAC80211, "%s():", __func__);
2007
2008         if (!(changed & BSS_CHANGED_BSSID))
2009                 return;
2010
2011         at76_dbg_dump(DBG_MAC80211, conf->bssid, ETH_ALEN, "bssid:");
2012
2013         mutex_lock(&priv->mtx);
2014
2015         memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2016
2017         if (is_valid_ether_addr(priv->bssid))
2018                 /* mac80211 is joining a bss */
2019                 at76_join(priv);
2020
2021         mutex_unlock(&priv->mtx);
2022 }
2023
2024 /* must be atomic */
2025 static void at76_configure_filter(struct ieee80211_hw *hw,
2026                                   unsigned int changed_flags,
2027                                   unsigned int *total_flags, u64 multicast)
2028 {
2029         struct at76_priv *priv = hw->priv;
2030         int flags;
2031
2032         at76_dbg(DBG_MAC80211, "%s(): changed_flags=0x%08x "
2033                  "total_flags=0x%08x",
2034                  __func__, changed_flags, *total_flags);
2035
2036         flags = changed_flags & AT76_SUPPORTED_FILTERS;
2037         *total_flags = AT76_SUPPORTED_FILTERS;
2038
2039         /* Bail out after updating flags to prevent a WARN_ON in mac80211. */
2040         if (priv->device_unplugged)
2041                 return;
2042
2043         /* FIXME: access to priv->promisc should be protected with
2044          * priv->mtx, but it's impossible because this function needs to be
2045          * atomic */
2046
2047         if (flags && !priv->promisc) {
2048                 /* mac80211 wants us to enable promiscuous mode */
2049                 priv->promisc = 1;
2050         } else if (!flags && priv->promisc) {
2051                 /* we need to disable promiscuous mode */
2052                 priv->promisc = 0;
2053         } else
2054                 return;
2055
2056         ieee80211_queue_work(hw, &priv->work_set_promisc);
2057 }
2058
2059 static int at76_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2060                         struct ieee80211_vif *vif, struct ieee80211_sta *sta,
2061                         struct ieee80211_key_conf *key)
2062 {
2063         struct at76_priv *priv = hw->priv;
2064
2065         int i;
2066
2067         at76_dbg(DBG_MAC80211, "%s(): cmd %d key->alg %d key->keyidx %d "
2068                  "key->keylen %d",
2069                  __func__, cmd, key->alg, key->keyidx, key->keylen);
2070
2071         if (key->alg != ALG_WEP)
2072                 return -EOPNOTSUPP;
2073
2074         key->hw_key_idx = key->keyidx;
2075
2076         mutex_lock(&priv->mtx);
2077
2078         switch (cmd) {
2079         case SET_KEY:
2080                 memcpy(priv->wep_keys[key->keyidx], key->key, key->keylen);
2081                 priv->wep_keys_len[key->keyidx] = key->keylen;
2082
2083                 /* FIXME: find out how to do this properly */
2084                 priv->wep_key_id = key->keyidx;
2085
2086                 break;
2087         case DISABLE_KEY:
2088         default:
2089                 priv->wep_keys_len[key->keyidx] = 0;
2090                 break;
2091         }
2092
2093         priv->wep_enabled = 0;
2094
2095         for (i = 0; i < WEP_KEYS; i++) {
2096                 if (priv->wep_keys_len[i] != 0)
2097                         priv->wep_enabled = 1;
2098         }
2099
2100         at76_startup_device(priv);
2101
2102         mutex_unlock(&priv->mtx);
2103
2104         return 0;
2105 }
2106
2107 static const struct ieee80211_ops at76_ops = {
2108         .tx = at76_mac80211_tx,
2109         .add_interface = at76_add_interface,
2110         .remove_interface = at76_remove_interface,
2111         .config = at76_config,
2112         .bss_info_changed = at76_bss_info_changed,
2113         .configure_filter = at76_configure_filter,
2114         .start = at76_mac80211_start,
2115         .stop = at76_mac80211_stop,
2116         .hw_scan = at76_hw_scan,
2117         .set_key = at76_set_key,
2118 };
2119
2120 /* Allocate network device and initialize private data */
2121 static struct at76_priv *at76_alloc_new_device(struct usb_device *udev)
2122 {
2123         struct ieee80211_hw *hw;
2124         struct at76_priv *priv;
2125
2126         hw = ieee80211_alloc_hw(sizeof(struct at76_priv), &at76_ops);
2127         if (!hw) {
2128                 printk(KERN_ERR DRIVER_NAME ": could not register"
2129                        " ieee80211_hw\n");
2130                 return NULL;
2131         }
2132
2133         priv = hw->priv;
2134         priv->hw = hw;
2135
2136         priv->udev = udev;
2137
2138         mutex_init(&priv->mtx);
2139         INIT_WORK(&priv->work_set_promisc, at76_work_set_promisc);
2140         INIT_WORK(&priv->work_submit_rx, at76_work_submit_rx);
2141         INIT_WORK(&priv->work_join_bssid, at76_work_join_bssid);
2142         INIT_DELAYED_WORK(&priv->dwork_hw_scan, at76_dwork_hw_scan);
2143
2144         tasklet_init(&priv->rx_tasklet, at76_rx_tasklet, 0);
2145
2146         priv->pm_mode = AT76_PM_OFF;
2147         priv->pm_period = 0;
2148
2149         /* unit us */
2150         priv->hw->channel_change_time = 100000;
2151
2152         return priv;
2153 }
2154
2155 static int at76_alloc_urbs(struct at76_priv *priv,
2156                            struct usb_interface *interface)
2157 {
2158         struct usb_endpoint_descriptor *endpoint, *ep_in, *ep_out;
2159         int i;
2160         int buffer_size;
2161         struct usb_host_interface *iface_desc;
2162
2163         at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
2164
2165         at76_dbg(DBG_URB, "%s: NumEndpoints %d ", __func__,
2166                  interface->altsetting[0].desc.bNumEndpoints);
2167
2168         ep_in = NULL;
2169         ep_out = NULL;
2170         iface_desc = interface->cur_altsetting;
2171         for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
2172                 endpoint = &iface_desc->endpoint[i].desc;
2173
2174                 at76_dbg(DBG_URB, "%s: %d. endpoint: addr 0x%x attr 0x%x",
2175                          __func__, i, endpoint->bEndpointAddress,
2176                          endpoint->bmAttributes);
2177
2178                 if (!ep_in && usb_endpoint_is_bulk_in(endpoint))
2179                         ep_in = endpoint;
2180
2181                 if (!ep_out && usb_endpoint_is_bulk_out(endpoint))
2182                         ep_out = endpoint;
2183         }
2184
2185         if (!ep_in || !ep_out) {
2186                 dev_printk(KERN_ERR, &interface->dev,
2187                            "bulk endpoints missing\n");
2188                 return -ENXIO;
2189         }
2190
2191         priv->rx_pipe = usb_rcvbulkpipe(priv->udev, ep_in->bEndpointAddress);
2192         priv->tx_pipe = usb_sndbulkpipe(priv->udev, ep_out->bEndpointAddress);
2193
2194         priv->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
2195         priv->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2196         if (!priv->rx_urb || !priv->tx_urb) {
2197                 dev_printk(KERN_ERR, &interface->dev, "cannot allocate URB\n");
2198                 return -ENOMEM;
2199         }
2200
2201         buffer_size = sizeof(struct at76_tx_buffer) + MAX_PADDING_SIZE;
2202         priv->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL);
2203         if (!priv->bulk_out_buffer) {
2204                 dev_printk(KERN_ERR, &interface->dev,
2205                            "cannot allocate output buffer\n");
2206                 return -ENOMEM;
2207         }
2208
2209         at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
2210
2211         return 0;
2212 }
2213
2214 static struct ieee80211_rate at76_rates[] = {
2215         { .bitrate = 10, .hw_value = TX_RATE_1MBIT, },
2216         { .bitrate = 20, .hw_value = TX_RATE_2MBIT, },
2217         { .bitrate = 55, .hw_value = TX_RATE_5_5MBIT, },
2218         { .bitrate = 110, .hw_value = TX_RATE_11MBIT, },
2219 };
2220
2221 static struct ieee80211_channel at76_channels[] = {
2222         { .center_freq = 2412, .hw_value = 1 },
2223         { .center_freq = 2417, .hw_value = 2 },
2224         { .center_freq = 2422, .hw_value = 3 },
2225         { .center_freq = 2427, .hw_value = 4 },
2226         { .center_freq = 2432, .hw_value = 5 },
2227         { .center_freq = 2437, .hw_value = 6 },
2228         { .center_freq = 2442, .hw_value = 7 },
2229         { .center_freq = 2447, .hw_value = 8 },
2230         { .center_freq = 2452, .hw_value = 9 },
2231         { .center_freq = 2457, .hw_value = 10 },
2232         { .center_freq = 2462, .hw_value = 11 },
2233         { .center_freq = 2467, .hw_value = 12 },
2234         { .center_freq = 2472, .hw_value = 13 },
2235         { .center_freq = 2484, .hw_value = 14 }
2236 };
2237
2238 static struct ieee80211_supported_band at76_supported_band = {
2239         .channels = at76_channels,
2240         .n_channels = ARRAY_SIZE(at76_channels),
2241         .bitrates = at76_rates,
2242         .n_bitrates = ARRAY_SIZE(at76_rates),
2243 };
2244
2245 /* Register network device and initialize the hardware */
2246 static int at76_init_new_device(struct at76_priv *priv,
2247                                 struct usb_interface *interface)
2248 {
2249         struct wiphy *wiphy;
2250         size_t len;
2251         int ret;
2252
2253         /* set up the endpoint information */
2254         /* check out the endpoints */
2255
2256         at76_dbg(DBG_DEVSTART, "USB interface: %d endpoints",
2257                  interface->cur_altsetting->desc.bNumEndpoints);
2258
2259         ret = at76_alloc_urbs(priv, interface);
2260         if (ret < 0)
2261                 goto exit;
2262
2263         /* MAC address */
2264         ret = at76_get_hw_config(priv);
2265         if (ret < 0) {
2266                 dev_printk(KERN_ERR, &interface->dev,
2267                            "cannot get MAC address\n");
2268                 goto exit;
2269         }
2270
2271         priv->domain = at76_get_reg_domain(priv->regulatory_domain);
2272
2273         priv->channel = DEF_CHANNEL;
2274         priv->iw_mode = IW_MODE_INFRA;
2275         priv->rts_threshold = DEF_RTS_THRESHOLD;
2276         priv->frag_threshold = DEF_FRAG_THRESHOLD;
2277         priv->short_retry_limit = DEF_SHORT_RETRY_LIMIT;
2278         priv->txrate = TX_RATE_AUTO;
2279         priv->preamble_type = PREAMBLE_TYPE_LONG;
2280         priv->beacon_period = 100;
2281         priv->auth_mode = WLAN_AUTH_OPEN;
2282         priv->scan_min_time = DEF_SCAN_MIN_TIME;
2283         priv->scan_max_time = DEF_SCAN_MAX_TIME;
2284         priv->scan_mode = SCAN_TYPE_ACTIVE;
2285         priv->device_unplugged = 0;
2286
2287         /* mac80211 initialisation */
2288         wiphy = priv->hw->wiphy;
2289         priv->hw->wiphy->max_scan_ssids = 1;
2290         priv->hw->wiphy->max_scan_ie_len = 0;
2291         priv->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
2292         priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &at76_supported_band;
2293         priv->hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
2294                           IEEE80211_HW_SIGNAL_UNSPEC;
2295         priv->hw->max_signal = 100;
2296
2297         SET_IEEE80211_DEV(priv->hw, &interface->dev);
2298         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
2299
2300         len = sizeof(wiphy->fw_version);
2301         snprintf(wiphy->fw_version, len, "%d.%d.%d-%d",
2302                  priv->fw_version.major, priv->fw_version.minor,
2303                  priv->fw_version.patch, priv->fw_version.build);
2304
2305         wiphy->hw_version = priv->board_type;
2306
2307         ret = ieee80211_register_hw(priv->hw);
2308         if (ret) {
2309                 printk(KERN_ERR "cannot register mac80211 hw (status %d)!\n",
2310                        ret);
2311                 goto exit;
2312         }
2313
2314         priv->mac80211_registered = 1;
2315
2316         wiphy_info(priv->hw->wiphy, "usb %s, mac %pm, firmware %d.%d.%d-%d\n",
2317                    dev_name(&interface->dev), priv->mac_addr,
2318                    priv->fw_version.major, priv->fw_version.minor,
2319                    priv->fw_version.patch, priv->fw_version.build);
2320         wiphy_info(priv->hw->wiphy, "regulatory domain 0x%02x: %s\n",
2321                    priv->regulatory_domain, priv->domain->name);
2322
2323 exit:
2324         return ret;
2325 }
2326
2327 static void at76_delete_device(struct at76_priv *priv)
2328 {
2329         at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
2330
2331         /* The device is gone, don't bother turning it off */
2332         priv->device_unplugged = 1;
2333
2334         tasklet_kill(&priv->rx_tasklet);
2335
2336         if (priv->mac80211_registered)
2337                 ieee80211_unregister_hw(priv->hw);
2338
2339         if (priv->tx_urb) {
2340                 usb_kill_urb(priv->tx_urb);
2341                 usb_free_urb(priv->tx_urb);
2342         }
2343         if (priv->rx_urb) {
2344                 usb_kill_urb(priv->rx_urb);
2345                 usb_free_urb(priv->rx_urb);
2346         }
2347
2348         at76_dbg(DBG_PROC_ENTRY, "%s: unlinked urbs", __func__);
2349
2350         kfree(priv->bulk_out_buffer);
2351
2352         del_timer_sync(&ledtrig_tx_timer);
2353
2354         kfree_skb(priv->rx_skb);
2355
2356         usb_put_dev(priv->udev);
2357
2358         at76_dbg(DBG_PROC_ENTRY, "%s: before freeing priv/ieee80211_hw",
2359                  __func__);
2360         ieee80211_free_hw(priv->hw);
2361
2362         at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
2363 }
2364
2365 static int at76_probe(struct usb_interface *interface,
2366                       const struct usb_device_id *id)
2367 {
2368         int ret;
2369         struct at76_priv *priv;
2370         struct fwentry *fwe;
2371         struct usb_device *udev;
2372         int op_mode;
2373         int need_ext_fw = 0;
2374         struct mib_fw_version fwv;
2375         int board_type = (int)id->driver_info;
2376
2377         udev = usb_get_dev(interface_to_usbdev(interface));
2378
2379         /* Load firmware into kernel memory */
2380         fwe = at76_load_firmware(udev, board_type);
2381         if (!fwe) {
2382                 ret = -ENOENT;
2383                 goto error;
2384         }
2385
2386         op_mode = at76_get_op_mode(udev);
2387
2388         at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
2389
2390         /* we get OPMODE_NONE with 2.4.23, SMC2662W-AR ???
2391            we get 204 with 2.4.23, Fiberline FL-WL240u (505A+RFMD2958) ??? */
2392
2393         if (op_mode == OPMODE_HW_CONFIG_MODE) {
2394                 dev_printk(KERN_ERR, &interface->dev,
2395                            "cannot handle a device in HW_CONFIG_MODE\n");
2396                 ret = -EBUSY;
2397                 goto error;
2398         }
2399
2400         if (op_mode != OPMODE_NORMAL_NIC_WITH_FLASH
2401             && op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
2402                 /* download internal firmware part */
2403                 dev_printk(KERN_DEBUG, &interface->dev,
2404                            "downloading internal firmware\n");
2405                 ret = at76_load_internal_fw(udev, fwe);
2406                 if (ret < 0) {
2407                         dev_printk(KERN_ERR, &interface->dev,
2408                                    "error %d downloading internal firmware\n",
2409                                    ret);
2410                         goto error;
2411                 }
2412                 usb_put_dev(udev);
2413                 return ret;
2414         }
2415
2416         /* Internal firmware already inside the device.  Get firmware
2417          * version to test if external firmware is loaded.
2418          * This works only for newer firmware, e.g. the Intersil 0.90.x
2419          * says "control timeout on ep0in" and subsequent
2420          * at76_get_op_mode() fail too :-( */
2421
2422         /* if version >= 0.100.x.y or device with built-in flash we can
2423          * query the device for the fw version */
2424         if ((fwe->fw_version.major > 0 || fwe->fw_version.minor >= 100)
2425             || (op_mode == OPMODE_NORMAL_NIC_WITH_FLASH)) {
2426                 ret = at76_get_mib(udev, MIB_FW_VERSION, &fwv, sizeof(fwv));
2427                 if (ret < 0 || (fwv.major | fwv.minor) == 0)
2428                         need_ext_fw = 1;
2429         } else
2430                 /* No way to check firmware version, reload to be sure */
2431                 need_ext_fw = 1;
2432
2433         if (need_ext_fw) {
2434                 dev_printk(KERN_DEBUG, &interface->dev,
2435                            "downloading external firmware\n");
2436
2437                 ret = at76_load_external_fw(udev, fwe);
2438                 if (ret)
2439                         goto error;
2440
2441                 /* Re-check firmware version */
2442                 ret = at76_get_mib(udev, MIB_FW_VERSION, &fwv, sizeof(fwv));
2443                 if (ret < 0) {
2444                         dev_printk(KERN_ERR, &interface->dev,
2445                                    "error %d getting firmware version\n", ret);
2446                         goto error;
2447                 }
2448         }
2449
2450         priv = at76_alloc_new_device(udev);
2451         if (!priv) {
2452                 ret = -ENOMEM;
2453                 goto error;
2454         }
2455
2456         usb_set_intfdata(interface, priv);
2457
2458         memcpy(&priv->fw_version, &fwv, sizeof(struct mib_fw_version));
2459         priv->board_type = board_type;
2460
2461         ret = at76_init_new_device(priv, interface);
2462         if (ret < 0)
2463                 at76_delete_device(priv);
2464
2465         return ret;
2466
2467 error:
2468         usb_put_dev(udev);
2469         return ret;
2470 }
2471
2472 static void at76_disconnect(struct usb_interface *interface)
2473 {
2474         struct at76_priv *priv;
2475
2476         priv = usb_get_intfdata(interface);
2477         usb_set_intfdata(interface, NULL);
2478
2479         /* Disconnect after loading internal firmware */
2480         if (!priv)
2481                 return;
2482
2483         wiphy_info(priv->hw->wiphy, "disconnecting\n");
2484         at76_delete_device(priv);
2485         dev_printk(KERN_INFO, &interface->dev, "disconnected\n");
2486 }
2487
2488 /* Structure for registering this driver with the USB subsystem */
2489 static struct usb_driver at76_driver = {
2490         .name = DRIVER_NAME,
2491         .probe = at76_probe,
2492         .disconnect = at76_disconnect,
2493         .id_table = dev_table,
2494 };
2495
2496 static int __init at76_mod_init(void)
2497 {
2498         int result;
2499
2500         printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " loading\n");
2501
2502         mutex_init(&fw_mutex);
2503
2504         /* register this driver with the USB subsystem */
2505         result = usb_register(&at76_driver);
2506         if (result < 0)
2507                 printk(KERN_ERR DRIVER_NAME
2508                        ": usb_register failed (status %d)\n", result);
2509
2510         led_trigger_register_simple("at76_usb-tx", &ledtrig_tx);
2511         return result;
2512 }
2513
2514 static void __exit at76_mod_exit(void)
2515 {
2516         int i;
2517
2518         printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " unloading\n");
2519         usb_deregister(&at76_driver);
2520         for (i = 0; i < ARRAY_SIZE(firmwares); i++) {
2521                 if (firmwares[i].fw)
2522                         release_firmware(firmwares[i].fw);
2523         }
2524         led_trigger_unregister_simple(ledtrig_tx);
2525 }
2526
2527 module_param_named(debug, at76_debug, uint, 0600);
2528 MODULE_PARM_DESC(debug, "Debugging level");
2529
2530 module_init(at76_mod_init);
2531 module_exit(at76_mod_exit);
2532
2533 MODULE_AUTHOR("Oliver Kurth <oku@masqmail.cx>");
2534 MODULE_AUTHOR("Joerg Albert <joerg.albert@gmx.de>");
2535 MODULE_AUTHOR("Alex <alex@foogod.com>");
2536 MODULE_AUTHOR("Nick Jones");
2537 MODULE_AUTHOR("Balint Seeber <n0_5p4m_p13453@hotmail.com>");
2538 MODULE_AUTHOR("Pavel Roskin <proski@gnu.org>");
2539 MODULE_AUTHOR("Guido Guenther <agx@sigxcpu.org>");
2540 MODULE_AUTHOR("Kalle Valo <kalle.valo@iki.fi>");
2541 MODULE_AUTHOR("Sebastian Smolorz <sesmo@gmx.net>");
2542 MODULE_DESCRIPTION(DRIVER_DESC);
2543 MODULE_LICENSE("GPL");